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 A303529 #4 Apr 25 2018 12:44:00 %S A303529 32,42,246,1115,9225,102779,1052163,10663440,122173279,1457887585, %T A303529 16618141169,186784834355,2163723243263,25303642248607, %U A303529 291288603195002,3336138374158889,38555143474838580,446911479366972044 %N A303529 Number of 6Xn 0..1 arrays with every element equal to 0, 1, 3, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. %C A303529 Row 6 of A303525. %H A303529 R. H. Hardin, <a href="/A303529/b303529.txt">Table of n, a(n) for n = 1..210</a> %e A303529 Some solutions for n=5 %e A303529 ..0..1..0..1..0. .0..0..1..0..1. .0..0..0..1..0. .0..0..1..0..1 %e A303529 ..0..1..0..0..1. .0..1..0..0..1. .0..1..0..1..0. .0..1..0..0..1 %e A303529 ..1..0..0..0..1. .0..1..0..1..0. .0..1..0..1..0. .0..1..0..1..0 %e A303529 ..0..0..0..1..0. .0..1..0..1..0. .0..1..1..1..0. .0..1..0..1..0 %e A303529 ..0..0..0..1..0. .1..1..0..1..0. .1..1..1..1..1. .1..1..0..1..0 %e A303529 ..1..0..0..0..0. .0..1..0..0..0. .0..1..1..1..0. .0..1..0..1..0 %Y A303529 Cf. A303525. %K A303529 nonn %O A303529 1,1 %A A303529 _R. H. Hardin_, Apr 25 2018