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.

A207927 Number of nX7 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 0 and 1 1 1 vertically.

Table of values

n a(n)
1 40
2 1600
3 2160
4 18096
5 111584
6 592968
7 3773248
8 22906752
9 133271316
10 813048132
11 4888530112
12 29063550656
13 175651306248
14 1052837316972
15 6299856462528
16 37944438834000
17 227332237482360
18 1363281172707168
19 8196861050785472

List of values

[40, 1600, 2160, 18096, 111584, 592968, 3773248, 22906752, 133271316, 813048132, 4888530112, 29063550656, 175651306248, 1052837316972, 6299856462528, 37944438834000, 227332237482360, 1363281172707168, 8196861050785472]

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

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