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 A300207 #4 Feb 28 2018 14:15:19 %S A300207 64,8192,916061,105708560,12180207076,1404241937017,161892308617170, %T A300207 18664492764362592,2151821343856271110,248082627699949131634, %U A300207 28601348103095688080835,3297438140691647751490978 %N A300207 Number of nX7 0..1 arrays with every element equal to 0, 1, 2, 3, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero. %C A300207 Column 7 of A300208. %H A300207 R. H. Hardin, <a href="/A300207/b300207.txt">Table of n, a(n) for n = 1..210</a> %e A300207 Some solutions for n=5 %e A300207 ..0..0..0..0..1..0..1. .0..0..0..0..1..0..0. .0..0..0..0..1..0..1 %e A300207 ..0..0..0..1..0..0..1. .0..0..0..1..1..0..1. .0..0..0..1..1..0..1 %e A300207 ..0..0..0..1..0..1..0. .0..0..0..1..1..1..1. .0..0..0..1..0..1..1 %e A300207 ..0..0..0..1..0..1..0. .0..0..0..0..0..1..0. .0..0..0..1..1..0..0 %e A300207 ..0..0..0..0..1..1..0. .0..0..0..1..1..0..0. .0..0..0..1..1..1..1 %Y A300207 Cf. A300208. %K A300207 nonn %O A300207 1,1 %A A300207 _R. H. Hardin_, Feb 28 2018