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 A302811 #4 Apr 13 2018 13:11:23 %S A302811 16,512,6084,82367,1089773,14458177,192211013,2552331329,33899848278, %T A302811 450271081482,5980471515193,79433046406375,1055034976137769, %U A302811 14013032591127253,186121941517382653,2472082683795436664 %N A302811 Number of 5Xn 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 A302811 Row 5 of A302808. %H A302811 R. H. Hardin, <a href="/A302811/b302811.txt">Table of n, a(n) for n = 1..210</a> %e A302811 Some solutions for n=5 %e A302811 ..0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0 %e A302811 ..0..1..1..0..1. .1..0..1..1..0. .1..1..1..0..0. .1..1..1..1..1 %e A302811 ..1..0..1..1..0. .0..0..1..0..1. .0..0..0..0..0. .0..0..0..1..0 %e A302811 ..0..1..0..0..0. .0..1..1..0..1. .1..0..1..0..1. .1..1..0..1..0 %e A302811 ..0..1..1..1..1. .0..1..0..1..0. .1..1..0..1..1. .1..1..1..0..0 %Y A302811 Cf. A302808. %K A302811 nonn %O A302811 1,1 %A A302811 _R. H. Hardin_, Apr 13 2018