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 A296127 #4 Dec 05 2017 06:48:04 %S A296127 1,121,553,2463,35733,263489,1810441,16855693,138016847,1087543621, %T A296127 9228070694,76704166206,628908321069,5245176224753,43644001864720, %U A296127 361707709471024,3008980635521615,25033019588307299,208047564104356544 %N A296127 Number of nX7 0..1 arrays with each 1 adjacent to 2 or 5 king-move neighboring 1s. %C A296127 Column 7 of A296128. %H A296127 R. H. Hardin, <a href="/A296127/b296127.txt">Table of n, a(n) for n = 1..210</a> %e A296127 Some solutions for n=5 %e A296127 ..0..0..0..0..1..1..0. .0..1..0..0..0..0..0. .0..0..1..1..0..0..0 %e A296127 ..0..1..1..0..1..0..0. .1..1..0..0..0..0..0. .0..1..0..0..1..0..0 %e A296127 ..1..0..0..1..1..1..1. .0..0..0..0..0..0..0. .0..1..0..0..0..1..0 %e A296127 ..0..1..0..1..1..0..1. .0..1..1..0..0..1..1. .0..1..0..1..1..0..0 %e A296127 ..0..0..1..0..1..0..0. .0..0..1..0..0..1..0. .0..0..1..0..0..0..0 %Y A296127 Cf. A296128. %K A296127 nonn %O A296127 1,2 %A A296127 _R. H. Hardin_, Dec 05 2017