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 A303468 #4 Apr 24 2018 10:42:51 %S A303468 64,5135,160590,6051850,239939422,9459086839,373571747330, %T A303468 14793218857797,585806882371397,23202000467768644,919130744522825901, %U A303468 36411879602020158408,1442512357425434876243,57148308915057854768599 %N A303468 Number of nX7 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 A303468 Column 7 of A303469. %H A303468 R. H. Hardin, <a href="/A303468/b303468.txt">Table of n, a(n) for n = 1..210</a> %e A303468 Some solutions for n=5 %e A303468 ..0..1..0..1..0..1..1. .0..0..1..1..1..0..1. .0..1..1..0..1..0..0 %e A303468 ..0..1..0..0..0..1..1. .0..0..0..0..1..1..0. .0..0..0..1..1..0..1 %e A303468 ..0..0..0..1..0..1..0. .0..0..0..0..1..0..1. .0..0..0..1..0..0..1 %e A303468 ..0..0..0..1..1..1..0. .0..0..0..1..1..1..1. .0..0..0..1..0..1..0 %e A303468 ..0..1..0..1..0..1..0. .0..1..0..1..0..0..1. .0..1..0..1..1..0..1 %Y A303468 Cf. A303469. %K A303468 nonn %O A303468 1,1 %A A303468 _R. H. Hardin_, Apr 24 2018