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.

A281711 Number of nX4 0..1 arrays with no element unequal to a strict majority of its horizontal, diagonal and antidiagonal neighbors and with new values introduced in order 0 sequentially upwards.

Table of values

n a(n)
1 2
2 14
3 38
4 97
5 245
6 631
7 1625
8 4234
9 11017
10 28652
11 74521
12 193836
13 504195
14 1311543
15 3411786
16 8875377
17 23088294
18 60062126
19 156247057
20 406466099
21 1057396975
22 2750760479
23 7155964344
24 18615901819
25 48428431650
26 125984478749
27 327743372244

List of values

[2, 14, 38, 97, 245, 631, 1625, 4234, 11017, 28652, 74521, 193836, 504195, 1311543, 3411786, 8875377, 23088294, 60062126, 156247057, 406466099, 1057396975, 2750760479, 7155964344, 18615901819, 48428431650, 125984478749, 327743372244]

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

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