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.

A231972 Number of (n+1)X(3+1) 0..1 arrays with no element having a strict majority of its horizontal and vertical neighbors equal to one.

Table of values

n a(n)
1 36
2 169
3 841
4 4489
5 24964
6 136900
7 741321
8 4024036
9 21911761
10 119268241
11 648771841
12 3529072836
13 19199427844
14 104453715249
15 568259668900
16 3091481744121
17 16818570092025
18 91498158928089
19 497777418977476

List of values

[36, 169, 841, 4489, 24964, 136900, 741321, 4024036, 21911761, 119268241, 648771841, 3529072836, 19199427844, 104453715249, 568259668900, 3091481744121, 16818570092025, 91498158928089, 497777418977476]

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

Content is available under The OEIS End-User License Agreement.