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 A284338 #6 Apr 05 2020 22:56:50 %S A284338 16,134,2243,70039,1792007,53435287,1495300322,45518653024, %T A284338 1328555331356,40798892221235,1220007716469208,37635151585010843, %U A284338 1142550719106245636,35365628106723989270,1084498116514868629899,33665846562146310363380 %N A284338 Number of 5 X n 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero. %C A284338 Row 5 of A284334. %H A284338 R. H. Hardin, <a href="/A284338/b284338.txt">Table of n, a(n) for n = 1..55</a> %e A284338 Some solutions for n=4 %e A284338 ..0..0..1..0. .0..1..1..0. .0..0..1..0. .0..1..0..0. .0..1..1..1 %e A284338 ..1..1..1..0. .1..0..1..0. .0..1..0..0. .1..0..1..0. .1..0..0..0 %e A284338 ..1..0..0..0. .0..1..1..1. .0..1..1..1. .1..1..1..0. .0..0..1..0 %e A284338 ..1..1..1..0. .0..0..0..0. .0..1..1..1. .0..1..1..1. .1..1..0..0 %e A284338 ..1..1..1..0. .1..1..1..0. .1..0..1..1. .0..1..0..0. .0..1..1..1 %Y A284338 Cf. A284334. %K A284338 nonn %O A284338 1,1 %A A284338 _R. H. Hardin_, Mar 25 2017