Dangerously Dangerous Pattern

Level 2

Simple. Just find the next term in the series...

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


The answer is 1113213211.

Arkadeep Mukhopadhyay by Arkadeep Mukhopadhyay , 22, India

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3 solutions

If you are a numberphile, and know the name of Conway you should answer 1113213211 like a boss!

2 Helpful 0 Interesting 0 Brilliant 0 Confused

Another name for it is the look and say sequence..

Satyabrata Dash - 3 years ago
Vivek Sharma
Oct 7, 2018

Look and say sequence introduced by John Conway starting one 1 written as 11 and then two 1s written as 21 and then one 2 and one1 written as 1211 and so on ......

1 Helpful 1 Interesting 1 Brilliant 0 Confused
Fei Yuan
Sep 16, 2018

1，read one 1 11,read two 1 21,read one 2 and one 1 1211,read one 1 and one 2 and two 1 111221...

1 Helpful 1 Interesting 1 Brilliant 0 Confused

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