cp's OEIS Frontend

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.

A283512 Last block of length-n to appear for the first time in the Kolakoski sequence K (A000002).

Table of values

n a(n)
1 2
2 11
3 212
4 2121
5 21211
6 121121
7 2212212
8 22122121
9 221221211
10 2212212112
11 22122121122
12 112212211211
13 1122122112112
14 11221221121121
15 112212211211212
16 1122122112112122
17 11211212212211211
18 112212211211212211
19 1211212212112212212
20 12112122121122122121
21 121121221211221221211

List of values

[2, 11, 212, 2121, 21211, 121121, 2212212, 22122121, 221221211, 2212212112, 22122121122, 112212211211, 1122122112112, 11221221121121, 112212211211212, 1122122112112122, 11211212212211211, 112212211211212211, 1211212212112212212, 12112122121122122121, 121121221211221221211]

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

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