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 A302952 #4 Apr 16 2018 11:40:30 %S A302952 8,2208,185810,17374552,1596912288,147310312318,13578993819785, %T A302952 1251888966185979,115412264434282781,10639969409929461395, %U A302952 980908241510917291141,90430818798138269376877,8336898786544158131204437 %N A302952 Number of nX7 0..1 arrays with every element equal to 1, 2, 3, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. %C A302952 Column 7 of A302953. %H A302952 R. H. Hardin, <a href="/A302952/b302952.txt">Table of n, a(n) for n = 1..210</a> %e A302952 Some solutions for n=5 %e A302952 ..0..0..0..1..1..0..0. .0..0..0..1..1..0..0. .0..0..0..0..1..0..1 %e A302952 ..0..0..1..1..1..1..0. .0..0..1..0..0..0..0. .0..0..1..1..0..1..0 %e A302952 ..0..0..0..0..0..0..0. .0..0..0..0..1..1..1. .0..0..0..0..1..0..0 %e A302952 ..0..0..0..1..1..0..0. .0..0..0..1..0..1..1. .0..0..0..0..1..0..1 %e A302952 ..0..0..1..0..0..0..0. .0..0..1..1..0..0..0. .0..0..1..1..0..1..1 %Y A302952 Cf. A302953. %K A302952 nonn %O A302952 1,1 %A A302952 _R. H. Hardin_, Apr 16 2018