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 A300212 #6 Dec 27 2023 21:09:46 %S A300212 16,512,11965,298600,7452385,186427449,4666136435,116802113451, %T A300212 2923892905217,73194247560765,1832287164688910,45868072086086527, %U A300212 1148226402670943944,28743827399125599775,719551149215186260057 %N A300212 Number of n X 5 0..1 arrays with every element equal to 0, 1, 2, 3, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero. %C A300212 Column 5 of A300215. %H A300212 R. H. Hardin, <a href="/A300212/b300212.txt">Table of n, a(n) for n = 1..210</a> %H A300212 R. H. Hardin, <a href="/A300212/a300212.txt">Empirical recurrence of order 89</a> %F A300212 Empirical recurrence of order 89 (see link above). %e A300212 Some solutions for n=5 %e A300212 ..0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0 %e A300212 ..0..0..0..1..0. .0..0..1..0..0. .0..1..0..1..0. .0..1..0..1..1 %e A300212 ..1..1..1..0..0. .1..1..0..1..1. .1..1..0..1..0. .0..1..0..1..0 %e A300212 ..1..0..0..1..1. .1..1..0..1..1. .0..0..1..0..1. .1..1..0..0..1 %e A300212 ..1..0..1..1..1. .1..0..0..0..0. .0..0..1..0..1. .0..1..0..0..1 %Y A300212 Cf. A300215. %K A300212 nonn %O A300212 1,1 %A A300212 _R. H. Hardin_, Feb 28 2018