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 A302385 #4 Apr 06 2018 12:45:13 %S A302385 0,361,16451,514655,20993054,849467774,34271733937,1383359844850, %T A302385 55869034107773,2256277862917399,91119808168300632, %U A302385 3679882775189443109,148612776964178660961,6001755395115442008533,242382043501326104374522 %N A302385 Number of 6Xn 0..1 arrays with every element equal to 1, 2, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. %C A302385 Row 6 of A302381. %H A302385 R. H. Hardin, <a href="/A302385/b302385.txt">Table of n, a(n) for n = 1..210</a> %e A302385 Some solutions for n=5 %e A302385 ..0..0..0..1..0. .0..0..0..1..0. .0..0..0..0..0. .0..0..0..0..0 %e A302385 ..1..0..0..0..1. .1..0..0..0..1. .1..0..0..0..1. .1..0..0..0..1 %e A302385 ..0..1..1..0..1. .0..1..1..0..0. .0..1..1..1..0. .1..1..0..1..1 %e A302385 ..0..0..1..1..0. .1..0..0..0..0. .0..0..1..1..0. .0..1..0..0..1 %e A302385 ..1..1..0..1..1. .1..1..1..1..1. .1..1..0..0..1. .1..0..1..0..1 %e A302385 ..0..0..1..0..1. .1..0..0..1..1. .0..0..1..1..1. .0..0..0..1..0 %Y A302385 Cf. A302381. %K A302385 nonn %O A302385 1,2 %A A302385 _R. H. Hardin_, Apr 06 2018