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 A297653 #4 Jan 02 2018 15:13:45 %S A297653 37,6757,268655,16899640,1075678445,63350980838,3863740405975, %T A297653 234680441414485,14203234114710492,861618662716079824, %U A297653 52240779255897230595,3167041273737179764100,192025471018913375268462 %N A297653 Number of nX7 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1, 2 or 3 neighboring 1s. %C A297653 Column 7 of A297654. %H A297653 R. H. Hardin, <a href="/A297653/b297653.txt">Table of n, a(n) for n = 1..210</a> %e A297653 Some solutions for n=2 %e A297653 ..1..1..0..1..0..1..1. .1..1..0..1..1..0..1. .0..1..0..0..0..1..1 %e A297653 ..0..0..1..0..0..1..0. .0..0..1..1..0..1..1. .0..0..1..1..1..1..1 %Y A297653 Cf. A297654. %K A297653 nonn %O A297653 1,1 %A A297653 _R. H. Hardin_, Jan 02 2018