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.

A208167 Number of 6Xn 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 0 1 0 vertically.

Table of values

n a(n)
1 21
2 441
3 2491
4 13825
5 63031
6 297702
7 1474641
8 7151473
9 34264481
10 166182659
11 805621207
12 3890807396
13 18817025188
14 91075073881
15 440491413435
16 2130434106639
17 10306317416695
18 49854704983253
19 241148925982311
20 1166495712482115

List of values

[21, 441, 2491, 13825, 63031, 297702, 1474641, 7151473, 34264481, 166182659, 805621207, 3890807396, 18817025188, 91075073881, 440491413435, 2130434106639, 10306317416695, 49854704983253, 241148925982311, 1166495712482115]

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

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