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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.

A221369 A two-digit Look-and-Say sequence starting with 13: each term summarizes the increasing two-digit substrings of the previous term.

Table of values

n a(n)
0 13
1 113
2 111113
3 411113
4 311113141
5 311113114231141
6 511113214123331141142
7 511112113314121123131132233241142151
8 711312313214115321122223124331232233241142251
9 411412213214115221522423224125431432233241142143151153171

List of values

[13, 113, 111113, 411113, 311113141, 311113114231141, 511113214123331141142, 511112113314121123131132233241142151, 711312313214115321122223124331232233241142251, 411412213214115221522423224125431432233241142143151153171]

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

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