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 A302807 #4 Apr 13 2018 13:08:30 %S A302807 64,5135,154494,5396562,192211013,6769884156,238687785290, %T A302807 8434497360938,297820640670676,10516667144805042,371418358544006233, %U A302807 13116960409103691843,463238817838530130977,16359920350061929110887 %N A302807 Number of nX7 0..1 arrays with every element equal to 0, 1, 2, 3 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. %C A302807 Column 7 of A302808. %H A302807 R. H. Hardin, <a href="/A302807/b302807.txt">Table of n, a(n) for n = 1..210</a> %e A302807 Some solutions for n=5 %e A302807 ..0..1..0..1..1..1..1. .0..0..0..1..1..0..0. .0..1..0..0..1..1..0 %e A302807 ..0..0..1..0..0..1..0. .0..0..1..1..0..1..0. .0..0..1..1..0..0..0 %e A302807 ..0..0..0..1..1..1..0. .0..0..0..1..0..0..1. .0..0..0..1..0..0..0 %e A302807 ..0..0..0..0..1..0..0. .0..0..0..1..0..0..0. .0..0..0..1..0..1..1 %e A302807 ..0..0..1..0..1..1..0. .0..1..1..1..1..1..1. .0..1..1..0..0..1..0 %Y A302807 Cf. A302808. %K A302807 nonn %O A302807 1,1 %A A302807 _R. H. Hardin_, Apr 13 2018