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.

A207776 Number of 6Xn 0..1 arrays avoiding 0 0 0 and 1 1 1 horizontally and 0 0 1 and 0 1 0 vertically.

Table of values

n a(n)
1 21
2 441
3 972
4 7164
5 43264
6 195160
7 1246206
8 7381202
9 35627804
10 220514498
11 1274712127
12 6417933773
13 38976638418
14 221650017452
15 1149943284883
16 6878942092623
17 38712906007620
18 205352839927648
19 1212860472464769

List of values

[21, 441, 972, 7164, 43264, 195160, 1246206, 7381202, 35627804, 220514498, 1274712127, 6417933773, 38976638418, 221650017452, 1149943284883, 6878942092623, 38712906007620, 205352839927648, 1212860472464769]

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

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