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 A303473 #4 Apr 24 2018 10:46:17 %S A303473 32,2048,39098,872026,19374638,427097893,9459086839,209307775365, %T A303473 4631027050408,102476059849475,2267535893974609,50174934890184604, %U A303473 1110249088638046980,24567091613015417289,543609599779313016247 %N A303473 Number of 6Xn 0..1 arrays with every element equal to 0, 1, 2, 3, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. %C A303473 Row 6 of A303469. %H A303473 R. H. Hardin, <a href="/A303473/b303473.txt">Table of n, a(n) for n = 1..210</a> %e A303473 Some solutions for n=5 %e A303473 ..0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0 %e A303473 ..0..0..1..1..1. .0..0..1..1..0. .0..0..1..1..0. .0..0..1..1..0 %e A303473 ..0..1..0..0..1. .1..0..1..0..1. .1..0..1..1..1. .0..1..0..1..1 %e A303473 ..0..1..0..1..0. .0..0..1..0..1. .0..1..0..0..0. .1..1..1..1..0 %e A303473 ..0..1..0..1..0. .1..1..0..1..0. .1..1..0..1..1. .1..0..0..1..1 %e A303473 ..1..1..1..0..1. .0..1..1..0..0. .0..1..0..0..1. .0..0..0..1..1 %Y A303473 Cf. A303469. %K A303473 nonn %O A303473 1,1 %A A303473 _R. H. Hardin_, Apr 24 2018