## A simple number sequence I made

A forum for good logic/math puzzles.

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rileyrulesu
Posts: 20
Joined: Sun Jan 03, 2010 7:31 pm UTC

### A simple number sequence I made

I made this when i was about four years old, have fun trying to solve it!

1, 11, 21, 1211, 111221, 312211, 13112221, etc

so, what comes next, and how do you know?

p.s. its kind of simple, this was before i knew there was harder math than division

CueBall
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### Re: A simple number sequence I made

Spoiler:
One, one one, two ones, one two one one, one one one two two ones...
Spoiler:
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...
<3
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rileyrulesu
Posts: 20
Joined: Sun Jan 03, 2010 7:31 pm UTC

### Re: A simple number sequence I made

that was fast

Ralp
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### Re: A simple number sequence I made

Spoiler:
It's a fairly well-known sequence with some interesting properties: http://en.wikipedia.org/wiki/Look-and-say_sequence

rileyrulesu
Posts: 20
Joined: Sun Jan 03, 2010 7:31 pm UTC

### Re: A simple number sequence I made

aww and here i thought i was being original

jestingrabbit
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### Re: A simple number sequence I made

and its been done here often. Locked.
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