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 A298968 #4 Jan 30 2018 13:30:17 %S A298968 32,2048,80972,3740381,170137416,7785598672,356356552103, %T A298968 16312003284843,746698046920333,34181115229827771,1564687555985990215, %U A298968 71625762302968232113,3278769787462125741510,150090290173413011810518 %N A298968 Number of nX6 0..1 arrays with every element equal to 0, 1, 2, 3, 4 or 5 king-move adjacent elements, with upper left element zero. %C A298968 Column 6 of A298970. %H A298968 R. H. Hardin, <a href="/A298968/b298968.txt">Table of n, a(n) for n = 1..210</a> %e A298968 Some solutions for n=5 %e A298968 ..0..0..1..0..1..0. .0..0..1..1..0..1. .0..0..1..0..1..1. .0..0..1..0..0..0 %e A298968 ..0..0..1..0..1..1. .0..0..1..1..1..1. .0..0..1..1..0..0. .0..0..1..0..1..1 %e A298968 ..0..0..1..1..0..0. .0..0..1..0..0..0. .0..0..1..1..0..1. .0..0..1..0..0..0 %e A298968 ..0..1..0..1..1..0. .0..0..1..0..1..0. .0..1..0..1..1..0. .0..1..0..1..1..0 %e A298968 ..0..0..0..1..0..0. .0..1..0..1..0..1. .0..0..1..0..1..0. .0..1..0..0..0..0 %Y A298968 Cf. A298970. %K A298968 nonn %O A298968 1,1 %A A298968 _R. H. Hardin_, Jan 30 2018