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 A300180 #4 Feb 27 2018 12:31:14 %S A300180 32,2048,129217,8168705,516368256,32640586945,2063278351093, %T A300180 130424025161538,8244367994118153,521143277869649643, %U A300180 32942527085459429442,2082364172855562710821,131630476835565158890163 %N A300180 Number of nX6 0..1 arrays with every element equal to 0, 1, 2, 3, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero. %C A300180 Column 6 of A300182. %H A300180 R. H. Hardin, <a href="/A300180/b300180.txt">Table of n, a(n) for n = 1..210</a> %F A300180 Empirical: a(n) = 52*a(n-1) +613*a(n-2) +5871*a(n-3) +11376*a(n-4) +9186*a(n-5) -411458*a(n-6) +66088*a(n-7) -1386895*a(n-8) +8059846*a(n-9) -4373944*a(n-10) +14457696*a(n-11) -42895616*a(n-12) +12292096*a(n-13) -11452416*a(n-14) +15335424*a(n-15) %e A300180 Some solutions for n=5 %e A300180 ..0..0..0..0..1..0. .0..0..0..0..1..1. .0..0..0..1..1..0. .0..0..0..0..1..1 %e A300180 ..0..0..1..0..0..0. .0..0..0..0..1..1. .0..0..0..1..0..0. .0..0..1..0..1..1 %e A300180 ..0..0..0..1..0..1. .0..0..1..1..0..1. .0..0..1..0..1..0. .0..0..0..1..1..0 %e A300180 ..0..0..0..1..1..1. .0..0..0..1..1..1. .0..0..0..0..1..0. .0..0..0..1..0..1 %e A300180 ..0..0..1..0..0..0. .0..0..0..0..1..1. .0..0..0..0..1..1. .0..0..1..0..0..1 %Y A300180 Cf. A300182. %K A300180 nonn %O A300180 1,1 %A A300180 _R. H. Hardin_, Feb 27 2018