Quickly calculate a list of look-and-say numbers in your browser. To get your sequence, just enter the starting alphabet, starting term position, and the length of the sequence in the options below, and this utility will calculate that sequence. Created by developers from team Browserling.
Quickly calculate a list of look-and-say numbers in your browser. To get your sequence, just enter the starting alphabet, starting term position, and the length of the sequence in the options below, and this utility will calculate that sequence. Created by developers from team Browserling.
This is an online browser-based utility for generating a list of look and say numbers. The look and say sequence, invented by mathematician John Conway and popularized by Robert Morris, is also known as "count and say sequence" or "say what you see sequence". It's generated by describing a series of digits as letters in plain English language. The n-th term is constructed by reading the (n-1)-th term. For example, if the first term is "1", then to get the next term, we read what we see – "one one" and we get the next term – "11". Now, when we read this term, we say "two ones" and we get the third term – "21", and so it goes on. In this tool, you can specify the initial alphabet for the first term. It can be a series of digits and letters that will be read and described further in the sequence. You can also set the starting term position, specify how many following values you need, and adjust the separating character between terms. That's numberwang!
This is an online browser-based utility for generating a list of look and say numbers. The look and say sequence, invented by mathematician John Conway and popularized by Robert Morris, is also known as "count and say sequence" or "say what you see sequence". It's generated by describing a series of digits as letters in plain English language. The n-th term is constructed by reading the (n-1)-th term. For example, if the first term is "1", then to get the next term, we read what we see – "one one" and we get the next term – "11". Now, when we read this term, we say "two ones" and we get the third term – "21", and so it goes on. In this tool, you can specify the initial alphabet for the first term. It can be a series of digits and letters that will be read and described further in the sequence. You can also set the starting term position, specify how many following values you need, and adjust the separating character between terms. That's numberwang!
In this example, we generate the first 10 numbers of the count and say sequence, outputting each term on a new line.
The look and say sequence is often called Morris sequence as it was popularized by cryptographer Robert Morris. In this example, we calculate the 20th term of the Morris number sequence, by specifying the starting number 20, and the amount 1.
In this example, we put an arrow character between the say what you see sequence numbers in order to better illustrate the flow of sequence members.
In this example, we generate an alphanumeric look and say sequence. The first term consists of the first three letters of the English alphabet "abc". When we read it aloud we say "one a, one b, one c". As a result, we get "1a1b1c" as the second term. In the following values, the digits change but the three initial letters remain unchanged.
In this example, we illustrate the fixed point of look and say sequence. The members of the sequence in this example are constant and never change. It's because they are written the same way they are read. This sequence is only possible if the initial alphabet is "22". Reading it aloud "two twos", we get the same following term. We generate 15 such constants and separate them by a space. This sequence is also sometimes called degenerate sequence as it never changes.
This example generates Conway's sequence. This sequence, invented by mathematician Ilan Vardi, is a variation of look and say sequence and the only change is that the starting number is "3". We calculate eight Conway sequence's members and display each of them on a new line.
You can pass options to this tool using their codes as query arguments and it will automatically compute output. To get the code of an option, just hover over its icon. Here's how to type it in your browser's address bar. Click to try!
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Create a list of neat looking numbers.
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Given numbers and a grammar, recursively rewrite them.
Create a number from the mantissa, base, and exponent.
Show how a fp number is represented in a computer.
Convert a number to the a×10<sup>b</sup> form.
Convert a number in scientific notation to a regular number.
Create a list of unary numbers (1, 11, 111, 1111, …).
Create a list of alphabetic numbers (a, b, c, …, z, aa, ab, …).
Create a list of Roman numbers (i, ii, iii, iv, v…).
Create a list of Braille numbers (⠂, ⠆, ⠒, ⠲, ⠢, …).
Create a list of random binary numbers.
Create a list of random octal numbers.
Create a list of random decimal numbers.
Create a list of random hexadecimal numbers.
Calculate a cumulative sum of a list of numbers.
Calculate a cumulative difference of a list of numbers.
Calculate a cumulative product of a list of numbers.
Divide two numbers and find their quotient.
Divide the digits of the given number.
Find the factorial of a number.
Find the average of multiple numbers.
Find the mean of multiple numbers.
Find the mode of multiple numbers.
Create one or more anagrams of a number.
Create a list of digit bigrams from a number.
Create a list of digit trigrams from a number.
Create a list of digit ngrams from a number.
Create a list of polynomial progression numbers.
Create a list of metric prefixes.
Report how many digits appear how many times.
Convert a cardinal number to an ordinal number.
Convert an ordinal number to a cardinal number.
Convert Arabic numerals to Roman numerals.
Convert Roman Numerals to Arabic numerals.
Calculate a series of extended Fibonacci numbers.
Find numbers that are both Fibonacci numbers and primes.
Check if a number is a Fibonacci number.
Check if a number is both a Fibonacci number and a prime.
Create a sequence of Fibonacci words.
Create a sequence of Tribonacci words.
Create a sequence of Tetranacci words.
Create a sequence of Pentanacci words.
Calculate a series of extended Lucas numbers.
Calculate a series of extended Lucas numbers.
Check if a number is both a Lucas number and a prime.
Calculate a sequence of Moser-Bruijn numbers.
Calculate a sequence of Oldenburger-Kolakoski numbers.
Calculate a sequence of Stanley numbers.
Calculate a sequence of self-describing Gijswijt numbers.
Calculate a sequence of Rusin-Shapiro numbers.
Calculate a sequence of Baum-Sweet numbers.
Calculate members of Thue-Morse number series.
Create a list of perfect numbers.
Create a list of almost perfect numbers.
Calculate a sequence of abundant numbers.
Calculate a sequence of deficient numbers.
Generate a list of paperfolding sequence numbers.
Create a list of numbers that are not prime.
Generate an LCD display that shows the given number.
Generate a table of numbers.
Check if the given number is a perfect number.
Check if the given number is an abundant number.
Check if the given number is a deficient number.
Find the modulus of a number.
Group together digits of a number.
Create a list of digits from a number.
Apply sprintf or printf function to numbers.
Let Zalgo destroy your numbers.
Repeat a number multiple times.
Create a mirror copy of a number.
Add zeros to a number.
Add a padding of custom symbols to a number.
Reverse the order of digits of a number.
Cyclically rotate digits of a number to the left or right.
Add one to the given number.
Add one to every digit in a number.
Subtract one from the given number.
Subtract one from every digit in a number.
Discover patterns in sequences of numbers.
Find how often numeric values occur.
Find x% of a number.
Create numbers of arbitrary length and properties.
Print the Googol/Google number, which is 10<sup>100</sup>.
Print the biggest number in the world.
Create a list of big numbers.
Print the smallest number in the world.
Create a list of small numbers.
Create a list of natural numbers.
Create a list of rational numbers.
Create a series of numbers where all terms are the same.
Create a sequence of real numbers.
Create a list of complex numbers.
Create a sequence of binary numbers.
Create a sequence of number pairs.
Create a sequence of number triples.
Create a sequence of number n-tuples.
Create a number with not that many digits.
Create a number with many digits.
Interweave two or more number digit-by-digit.
Rewrite a number in the decimal representation.
Convert a fraction to a decimal number.
Convert a decimal number to a fraction.
Convert a base two number to base eight number.
Convert a base two number to base ten number.
Convert a base two number to base sixteen number.
Convert a base eight number to base two number.
Convert a base eight number to base ten number.
Convert a base eight number to base sixteen number.
Convert a base ten number to base two number.
Convert a base ten number to base eight number.
Convert a base ten number to base sixteen number.
Convert a base sixteen number to base two number.
Convert a base sixteen number to base eight number.
Convert a base sixteen number to base ten number.
Convert any number in any base to any other base.
Change the significand of a number.
Change the power of a number.
Replace digits in a number with alphabet letters.
Form a spiral from the digits of a number.
Form a circle from the digits of a number.
Form a tree from the given numbers.
Form a tree from the digits of a number.
Remove the decimal separator from a decimal number.
Modify numbers so they are almost the same but have errors.
Generate various number typos.
Write numbers in a different font.
Write numbers in a bold font.
Write numbers with an underline below them.
Write numbers with a strikethrough on them.
Write numbers in a superscript font.
Write numbers in a subscript font.
Change digits in a number to Unicode look-alikes.
Change the given numbers a little bit.
Change the digits of the given numbers a little bit.
Calculate the complexity (entropy) of a number.
Test if the given number is numberwang.
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We're Browserling — a friendly and fun cross-browser testing company powered by alien technology. At Browserling we love to make peoples' lives easier, so we created this collection of number crunching tools. Our tools have the simplest user interface that doesn't require advanced computer skills and they are used by millions of people every month. Our number tools are actually powered by our web developer tools that we created over the last couple of years. Check them out!
