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 A299658 #6 Feb 15 2018 14:49:58 %S A299658 16,512,11888,297071,7411398,185302633,4634931975,115940148451, %T A299658 2900256951630,72550765755149,1814880621999624,45399839444130818, %U A299658 1135692126141775248,28409717970065456461,710678591596437046213 %N A299658 Number of nX5 0..1 arrays with every element equal to 0, 1, 2, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero. %C A299658 Column 5 of A299661. %H A299658 R. H. Hardin, <a href="/A299658/b299658.txt">Table of n, a(n) for n = 1..210</a> %H A299658 R. H. Hardin, <a href="/A299658/a299658.txt">Empirical recurrence of order 89</a> %F A299658 Empirical recurrence of order 89 (see link above) %e A299658 Some solutions for n=5 %e A299658 ..0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0 %e A299658 ..0..0..1..1..1. .0..0..1..1..1. .0..0..1..1..1. .0..0..1..0..1 %e A299658 ..0..0..0..0..1. .1..0..1..1..1. .1..1..1..0..0. .1..0..1..0..0 %e A299658 ..0..1..1..0..0. .0..0..1..0..1. .0..0..0..1..1. .1..0..0..1..0 %e A299658 ..1..0..1..1..0. .0..0..1..0..0. .1..0..0..0..0. .0..1..1..0..1 %Y A299658 Cf. A299661. %K A299658 nonn %O A299658 1,1 %A A299658 _R. H. Hardin_, Feb 15 2018