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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.

A201642 Successive generations of the variant of the Kolakoski sequence.

Table of values

n a(n)
0 1
1 12
2 1211
3 121121
4 121121221
5 12112122122112
6 1211212212211211221211
7 121121221221121122121121221121121
8 1211212212211211221211212211211212212211212212112
9 12112122122112112212112122112112122122112122121121122122112122122112112122

List of values

[1, 12, 1211, 121121, 121121221, 12112122122112, 1211212212211211221211, 121121221221121122121121221121121, 1211212212211211221211212211211212212211212212112, 12112122122112112212112122112112122122112122121121122122112122122112112122]

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

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