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 A285157 #6 Apr 05 2020 23:16:20 %S A285157 0,950,42176,2446130,133021570,7586120602,440991447842,26071592935186, %T A285157 1558862253694926,93999167152474650,5705081093219095286, %U A285157 348057953640435986490,21324734520562429889518,1311153858462897839643592 %N A285157 Number of 6 X n 0..1 arrays with the number of 1's horizontally or antidiagonally adjacent to some 0 one less than the number of 0's adjacent to some 1. %C A285157 Row 6 of A285152. %H A285157 R. H. Hardin, <a href="/A285157/b285157.txt">Table of n, a(n) for n = 1..41</a> %e A285157 Some solutions for n=3 %e A285157 ..0..1..1. .1..0..0. .0..1..0. .0..1..1. .1..0..0. .1..0..0. .1..1..1 %e A285157 ..0..1..0. .1..0..1. .1..1..0. .0..1..0. .0..0..1. .1..1..1. .0..1..0 %e A285157 ..0..1..0. .0..1..0. .1..1..1. .1..0..0. .1..0..1. .0..0..0. .1..1..1 %e A285157 ..1..1..0. .1..0..1. .0..1..0. .1..1..0. .1..0..0. .0..0..1. .0..1..0 %e A285157 ..1..0..0. .0..1..0. .1..1..1. .0..0..1. .0..0..0. .0..1..1. .0..1..0 %e A285157 ..1..1..1. .0..1..0. .0..1..0. .1..1..0. .0..1..0. .0..1..0. .1..1..0 %Y A285157 Cf. A285152. %K A285157 nonn %O A285157 1,2 %A A285157 _R. H. Hardin_, Apr 12 2017