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 A303088 #4 Apr 18 2018 12:24:14 %S A303088 32,10,1512,1054,84474,409478,13375327,170974652,3893734675, %T A303088 71289930593,1496311061702,30100235172688,624208088551832, %U A303088 12842477892658295,266147935416358350,5506837456678308359,114163685076018803329 %N A303088 Number of 6Xn 0..1 arrays with every element equal to 0, 2, 3, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. %C A303088 Row 6 of A303084. %H A303088 R. H. Hardin, <a href="/A303088/b303088.txt">Table of n, a(n) for n = 1..210</a> %e A303088 Some solutions for n=5 %e A303088 ..0..0..1..0..0. .0..1..1..0..0. .0..0..1..1..1. .0..0..0..0..1 %e A303088 ..1..0..0..0..1. .1..1..0..0..1. .1..0..0..1..0. .1..0..0..0..0 %e A303088 ..1..0..0..0..0. .0..1..1..0..1. .0..0..1..1..1. .0..0..1..0..0 %e A303088 ..0..0..0..0..1. .1..1..0..0..0. .0..0..0..1..1. .0..0..0..0..1 %e A303088 ..0..0..1..0..0. .0..1..1..0..1. .1..0..0..1..1. .1..0..1..0..0 %e A303088 ..1..0..0..0..0. .1..1..1..0..1. .1..0..0..1..1. .1..0..1..0..0 %Y A303088 Cf. A303084. %K A303088 nonn %O A303088 1,1 %A A303088 _R. H. Hardin_, Apr 18 2018