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.

A207894 Number of nX7 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 0 and 1 1 1 vertically.

Table of values

n a(n)
1 28
2 784
3 2520
4 20168
5 135714
6 856480
7 5888458
8 39828558
9 260749390
10 1761010222
11 11829617422
12 78462173820
13 526979351782
14 3530615876490
15 23530243300772
16 157698231146356
17 1055466664497864
18 7048335728590736
19 47191056299318688

List of values

[28, 784, 2520, 20168, 135714, 856480, 5888458, 39828558, 260749390, 1761010222, 11829617422, 78462173820, 526979351782, 3530615876490, 23530243300772, 157698231146356, 1055466664497864, 7048335728590736, 47191056299318688]

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

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