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 A303472 #4 Apr 24 2018 10:45:38 %S A303472 16,512,6369,89371,1243692,17247543,239939422,3335048493,46357441983, %T A303472 644411387300,8957714227776,124518113207477,1730885098566063, %U A303472 24060449638691425,334456224185985141,4649163632178068981 %N A303472 Number of 5Xn 0..1 arrays with every element equal to 0, 1, 2, 3, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. %C A303472 Row 5 of A303469. %H A303472 R. H. Hardin, <a href="/A303472/b303472.txt">Table of n, a(n) for n = 1..210</a> %e A303472 Some solutions for n=5 %e A303472 ..0..0..0..0..0. .0..0..0..0..1. .0..0..0..0..0. .0..0..0..0..1 %e A303472 ..0..1..1..1..0. .0..1..1..0..0. .0..0..1..1..1. .1..1..1..1..1 %e A303472 ..1..0..1..1..0. .1..1..0..0..1. .1..0..1..0..0. .0..0..0..1..0 %e A303472 ..1..0..0..0..1. .0..1..0..0..1. .0..0..0..1..1. .1..1..0..1..1 %e A303472 ..1..0..1..0..0. .1..1..1..1..1. .0..0..1..0..0. .0..0..1..0..1 %Y A303472 Cf. A303469. %K A303472 nonn %O A303472 1,1 %A A303472 _R. H. Hardin_, Apr 24 2018