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 A297318 #4 Dec 28 2017 07:31:15 %S A297318 1,200,3159,29212,484808,8273245,121339476,1815438259,27950049482, %T A297318 426949482189,6494779570376,98961790075322,1508712969034695, %U A297318 22994788538451691,350445360895775177,5341072484013959839 %N A297318 Number of 5Xn 0..1 arrays with every 1 horizontally or antidiagonally adjacent to 1 or 2 neighboring 1s. %C A297318 Row 5 of A297314. %H A297318 R. H. Hardin, <a href="/A297318/b297318.txt">Table of n, a(n) for n = 1..210</a> %e A297318 Some solutions for n=5 %e A297318 ..0..0..0..0..0. .0..0..0..0..0. .0..1..0..0..1. .0..0..0..0..0 %e A297318 ..0..1..1..0..0. .1..1..0..1..0. .1..0..0..1..0. .1..1..0..1..1 %e A297318 ..1..0..0..1..1. .0..0..1..0..0. .0..1..0..0..1. .0..1..0..1..1 %e A297318 ..0..1..0..0..0. .0..1..1..0..0. .1..1..0..1..0. .1..0..0..0..0 %e A297318 ..1..0..0..0..0. .0..1..0..1..1. .0..0..0..1..1. .0..1..1..1..0 %Y A297318 Cf. A297314. %K A297318 nonn %O A297318 1,2 %A A297318 _R. H. Hardin_, Dec 28 2017