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 A302378 #4 Apr 06 2018 12:40:03 %S A302378 3,161,2886,56541,1089035,20993054,404225195,7787623959,150008013842, %T A302378 2889619130491,55662670608009,1072229459666190,20654344779041771, %U A302378 397864432000232871,7664058367627889686,147632676645411073113 %N A302378 Number of nX5 0..1 arrays with every element equal to 1, 2, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. %C A302378 Column 5 of A302381. %H A302378 R. H. Hardin, <a href="/A302378/b302378.txt">Table of n, a(n) for n = 1..210</a> %H A302378 R. H. Hardin, <a href="/A302378/a302378.txt">Empirical recurrence of order 84</a> %F A302378 Empirical recurrence of order 84 (see link above) %e A302378 Some solutions for n=5 %e A302378 ..0..0..0..1..0. .0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0 %e A302378 ..0..1..1..0..0. .0..1..1..1..1. .1..0..1..1..0. .1..0..0..1..1 %e A302378 ..0..0..1..1..0. .1..1..1..0..1. .0..1..0..1..1. .1..1..0..0..1 %e A302378 ..1..0..1..1..1. .1..0..0..1..1. .1..1..0..0..1. .1..1..1..1..0 %e A302378 ..1..1..0..1..1. .0..0..0..0..0. .1..1..1..1..0. .0..0..1..0..0 %Y A302378 Cf. A302381. %K A302378 nonn %O A302378 1,1 %A A302378 _R. H. Hardin_, Apr 06 2018