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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.

A005150 Look and Say sequence: describe the previous term! (method A - initial term is 1).

Table of values

n a(n)
1 1
2 11
3 21
4 1211
5 111221
6 312211
7 13112221
8 1113213211
9 31131211131221
10 13211311123113112211
11 11131221133112132113212221
12 3113112221232112111312211312113211
13 1321132132111213122112311311222113111221131221
14 11131221131211131231121113112221121321132132211331222113112211
15 311311222113111231131112132112311321322112111312211312111322212311322113212221

List of values

[1, 11, 21, 1211, 111221, 312211, 13112221, 1113213211, 31131211131221, 13211311123113112211, 11131221133112132113212221, 3113112221232112111312211312113211, 1321132132111213122112311311222113111221131221, 11131221131211131231121113112221121321132132211331222113112211, 311311222113111231131112132112311321322112111312211312111322212311322113212221]

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

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