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 A297718 #4 Jan 04 2018 21:57:45 %S A297718 21,865,14462,336653,8103241,183324631,4238895126,98184350818, %T A297718 2265008802005,52325664406022,1208931244861130,27923747107250179, %U A297718 645039373054891828,14900511436264593319,344198253865046283579 %N A297718 Number of nX6 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1, 2 or 4 neighboring 1s. %C A297718 Column 6 of A297720. %H A297718 R. H. Hardin, <a href="/A297718/b297718.txt">Table of n, a(n) for n = 1..210</a> %e A297718 Some solutions for n=3 %e A297718 ..0..0..0..1..0..0. .1..1..0..0..1..1. .0..0..1..0..1..0. .0..1..0..0..0..1 %e A297718 ..1..0..1..0..1..1. .0..0..0..1..0..0. .0..1..1..0..0..1. .1..0..0..1..1..1 %e A297718 ..1..1..1..0..0..0. .1..1..0..0..0..0. .1..0..1..0..0..0. .0..0..0..0..0..1 %Y A297718 Cf. A297720. %K A297718 nonn %O A297718 1,1 %A A297718 _R. H. Hardin_, Jan 04 2018