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.

A207874 Number of n X n 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 1 0 and 1 1 1 vertically.

Table of values

n a(n)
1 2
2 16
3 72
4 400
5 1648
6 10742
7 51696
8 380632
9 2048344
10 17181610
11 99927528
12 1001175276
13 6019939360
14 76617072388
15 455429901920
16 7551993118538
17 45011858516784
18 1023575674079354
19 6041127787154280

List of values

[2, 16, 72, 400, 1648, 10742, 51696, 380632, 2048344, 17181610, 99927528, 1001175276, 6019939360, 76617072388, 455429901920, 7551993118538, 45011858516784, 1023575674079354, 6041127787154280]

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

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