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 A297805 #4 Jan 06 2018 09:35:00 %S A297805 1,14,533,2936,23781,320168,4340367,46828204,531988739,6428177030, %T A297805 77067241642,902041302792,10619747871090,125974447710657, %U A297805 1491769553672883,17617404647236968,208221597373256228 %N A297805 Number of 5Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2, 3 or 5 neighboring 1s. %C A297805 Row 5 of A297802. %H A297805 R. H. Hardin, <a href="/A297805/b297805.txt">Table of n, a(n) for n = 1..210</a> %e A297805 Some solutions for n=5 %e A297805 ..0..1..0..0..0. .0..0..1..1..0. .1..1..1..0..0. .0..1..1..0..0 %e A297805 ..1..1..1..1..0. .0..0..0..1..1. .0..1..1..1..1. .0..1..1..0..0 %e A297805 ..0..0..1..0..0. .0..0..1..0..0. .0..1..0..1..0. .0..0..1..1..0 %e A297805 ..0..0..0..1..0. .0..1..1..1..0. .0..1..1..0..0. .0..1..1..0..0 %e A297805 ..0..0..1..1..1. .1..1..0..0..0. .0..1..1..1..0. .1..1..0..0..0 %Y A297805 Cf. A297802. %K A297805 nonn %O A297805 1,2 %A A297805 _R. H. Hardin_, Jan 06 2018