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 A303099 #4 Apr 18 2018 12:36:01 %S A303099 3,161,2913,58160,1138331,22292709,436394066,8545589681,167325743073, %T A303099 3276397352974,64154700406471,1256205180765473,24597599305382336, %U A303099 481642558107218459,9430983527094262675,184666925800707714070 %N A303099 Number of nX5 0..1 arrays with every element equal to 1, 2, 3, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. %C A303099 Column 5 of A303102. %H A303099 R. H. Hardin, <a href="/A303099/b303099.txt">Table of n, a(n) for n = 1..210</a> %H A303099 R. H. Hardin, <a href="/A303099/a303099.txt">Empirical recurrence of order 90</a> %F A303099 Empirical recurrence of order 90 (see link above) %e A303099 Some solutions for n=5 %e A303099 ..0..0..0..0..0. .0..0..0..0..0. .0..0..0..1..0. .0..0..0..1..0 %e A303099 ..1..0..1..1..0. .0..1..1..0..0. .0..1..0..0..1. .0..1..1..0..0 %e A303099 ..0..1..0..0..0. .1..1..1..1..1. .1..1..0..0..1. .0..0..1..1..0 %e A303099 ..1..0..1..1..0. .1..0..0..0..1. .1..0..0..1..1. .1..1..0..0..0 %e A303099 ..1..1..1..0..1. .0..0..0..1..0. .1..1..0..0..1. .1..0..1..0..0 %Y A303099 Cf. A303102. %K A303099 nonn %O A303099 1,1 %A A303099 _R. H. Hardin_, Apr 18 2018