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 A300178 #4 Feb 27 2018 12:29:46 %S A300178 8,128,2033,32321,513832,8168705,129863167,2064518282,32820974441, %T A300178 521776133213,8295010668576,131871117920269,2096439948834819, %U A300178 33328453784142714,529843858517908445,8423268484861943881 %N A300178 Number of nX4 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 A300178 Column 4 of A300182. %H A300178 R. H. Hardin, <a href="/A300178/b300178.txt">Table of n, a(n) for n = 1..210</a> %F A300178 Empirical: a(n) = 14*a(n-1) +27*a(n-2) +51*a(n-3) -10*a(n-4) -a(n-5) -10*a(n-6) %e A300178 Some solutions for n=5 %e A300178 ..0..0..0..0. .0..0..0..1. .0..0..0..1. .0..0..0..1. .0..0..0..1 %e A300178 ..0..1..1..1. .0..1..0..0. .0..0..1..1. .1..0..0..0. .0..1..1..1 %e A300178 ..1..0..1..1. .0..1..1..0. .0..0..0..1. .0..0..0..0. .0..1..0..0 %e A300178 ..1..0..1..1. .0..1..1..1. .1..0..1..0. .0..0..1..0. .0..0..0..0 %e A300178 ..1..1..0..1. .1..1..1..1. .1..1..1..0. .0..1..1..1. .1..1..0..0 %Y A300178 Cf. A300182. %K A300178 nonn %O A300178 1,1 %A A300178 _R. H. Hardin_, Feb 27 2018