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.

A243516 Number of length n+2 0..7 arrays with no three elements in a row with pattern aba or abb (with a!=b) and new values 0..7 introduced in 0..7 order.

Table of values

n a(n)
1 3
2 5
3 10
4 25
5 77
6 280
7 1156
8 5267
9 25915
10 135214
11 736706
12 4139833
13 23767897
14 138468212
15 814675840
16 4824766303
17 28699128503
18 171207852154
19 1023332115838
20 6124430348357
21 36684624841813
22 219860794899520
23 1318179574171580

List of values

[3, 5, 10, 25, 77, 280, 1156, 5267, 25915, 135214, 736706, 4139833, 23767897, 138468212, 814675840, 4824766303, 28699128503, 171207852154, 1023332115838, 6124430348357, 36684624841813, 219860794899520, 1318179574171580]

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

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