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.

A279131 Number of nX5 0..1 arrays with no element equal to a strict majority of its horizontal and vertical neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.

Table of values

n a(n)
1 3
2 87
3 820
4 6396
5 47452
6 316516
7 2017028
8 12376570
9 73672888
10 428568648
11 2445310419
12 13733337644
13 76104228971
14 416938845972
15 2261749445562
16 12163774256441
17 64922115452637
18 344182830696292
19 1813720428133600

List of values

[3, 87, 820, 6396, 47452, 316516, 2017028, 12376570, 73672888, 428568648, 2445310419, 13733337644, 76104228971, 416938845972, 2261749445562, 12163774256441, 64922115452637, 344182830696292, 1813720428133600]