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.

A130838 Sorted list of strings that can be obtained by starting with 12 and repeatedly doubling any substring in place.

Table of values

n a(n)
1 12
2 112
3 122
4 1112
5 1122
6 1212
7 1222
8 11112
9 11122
10 11212
11 11222
12 12112
13 12122
14 12212
15 12222
16 111112
17 111122
18 111212
19 111222
20 112112
21 112122
22 112212
23 112222
24 121112
25 121122
26 121212
27 121222
28 122112
29 122122
30 122212
31 122222

List of values

[12, 112, 122, 1112, 1122, 1212, 1222, 11112, 11122, 11212, 11222, 12112, 12122, 12212, 12222, 111112, 111122, 111212, 111222, 112112, 112122, 112212, 112222, 121112, 121122, 121212, 121222, 122112, 122122, 122212, 122222]

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

Content is available under The OEIS End-User License Agreement.