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A sequence goes 1, 11, 21, 1211, 111221.  What is the next term?

 Jun 14, 2020
 #1
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This is an example of the look-and-say sequence, doesn't require so much math

SO for example: when starting with 1, you say 'ONE 1', so the next term would be 11.

You would say 11 as 'TWO one'(as there are two 1s), hence 21.

Therefore following this, the term after '111221' would be 'THREE one TWO two ONE one', so the next term would be '312211'(three 1s, two 2s, and one 1'!

 Jun 14, 2020
 #2
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1, 11, 21, 1211, 111221, 1111222111 I guess

 Jun 14, 2020
 #3
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Possible sequence identification:

 

OEIS A001388
1, 11, 21, 1211, 111221, 1012211, 1110112221, 101102110211, 111021101221101221, 1011012211011222110112211, 1110211011222110211022110212221, 10110122110211022110122110222110121110211, ...etc.

 Jun 14, 2020

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