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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A221368 A two-digit Look-and-Say sequence starting with 12: each term summarizes the increasing two-digit substrings of the previous term.

Table of values

n a(n)
0 12
1 112
2 111112
3 411112
4 311112141
5 311112114121131141
6 611212113214221231241
7 211412113114421122123124131132141142161
8 611412313414116621122123124331132341242144161
9 411512213314216321122323224331132133234541142143144261162166

List of values

[12, 112, 111112, 411112, 311112141, 311112114121131141, 611212113214221231241, 211412113114421122123124131132141142161, 611412313414116621122123124331132341242144161, 411512213314216321122323224331132133234541142143144261162166]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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