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 A299610 #4 Feb 14 2018 07:13:44 %S A299610 5,49,34,173,453,1223,3286,9873,28227,86428,253623,766882,2299579, %T A299610 6887900,20699158,62239664,186995764,562324870,1690827365,5083949541, %U A299610 15289512249,45981730995,138278962826,415872244403,1250740118045 %N A299610 Number of nX6 0..1 arrays with every element equal to 1, 2, 4, 6, 7 or 8 king-move adjacent elements, with upper left element zero. %C A299610 Column 6 of A299612. %H A299610 R. H. Hardin, <a href="/A299610/b299610.txt">Table of n, a(n) for n = 1..210</a> %e A299610 Some solutions for n=5 %e A299610 ..0..1..0..0..0..1. .0..0..0..1..1..0. .0..0..0..1..1..0. .0..1..1..0..1..0 %e A299610 ..0..1..1..1..1..0. .1..0..0..0..0..1. .1..0..0..0..0..1. .1..0..0..0..1..0 %e A299610 ..0..1..1..1..0..1. .0..1..0..0..0..1. .0..1..0..0..0..1. .1..0..0..0..1..0 %e A299610 ..1..1..1..1..0..1. .1..0..0..0..0..0. .0..1..0..0..0..0. .0..0..0..0..0..1 %e A299610 ..0..0..0..1..0..1. .0..0..0..1..1..1. .0..1..0..1..1..1. .1..1..1..0..0..0 %Y A299610 Cf. A299612. %K A299610 nonn %O A299610 1,1 %A A299610 _R. H. Hardin_, Feb 14 2018