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.
%I A302739 #4 Apr 12 2018 11:20:16 %S A302739 32,2048,85268,3778433,168799572,7530280825,336148647504, %T A302739 15005851329729,669868217032865,29903422831135923,1334911181586033610, %U A302739 59591443914944392698,2660207213782069872253,118753666013501679372163 %N A302739 Number of nX6 0..1 arrays with every element equal to 0, 1, 2, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. %C A302739 Column 6 of A302741. %H A302739 R. H. Hardin, <a href="/A302739/b302739.txt">Table of n, a(n) for n = 1..210</a> %e A302739 Some solutions for n=5 %e A302739 ..0..0..0..0..0..0. .0..0..1..1..0..0. .0..0..0..1..1..0. .0..0..0..1..1..0 %e A302739 ..0..0..1..1..1..1. .0..0..0..1..1..0. .0..0..1..1..0..1. .0..0..1..0..1..1 %e A302739 ..0..0..1..1..0..1. .0..0..1..0..0..0. .0..0..1..1..0..1. .0..0..1..0..0..1 %e A302739 ..0..0..0..1..0..1. .0..0..1..1..0..1. .0..0..1..1..0..0. .0..0..1..1..0..1 %e A302739 ..0..0..1..1..0..1. .0..0..0..1..1..0. .0..0..1..1..1..0. .0..0..1..1..1..0 %Y A302739 Cf. A302741. %K A302739 nonn %O A302739 1,1 %A A302739 _R. H. Hardin_, Apr 12 2018