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 A285158 #6 Apr 05 2020 23:16:53 %S A285158 0,3752,314197,36367674,3943470769,448765516394,52105131287528, %T A285158 6154165757308640,735304860260893623,88615482354663882652, %U A285158 10750513270733637895616,1311121613505876821936074 %N A285158 Number of 7 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 A285158 Row 7 of A285152. %H A285158 R. H. Hardin, <a href="/A285158/b285158.txt">Table of n, a(n) for n = 1..24</a> %e A285158 Some solutions for n=2 %e A285158 ..0..0. .1..1. .1..1. .1..1. .0..1. .1..1. .1..0. .0..1. .0..1. .1..0 %e A285158 ..1..1. .1..1. .1..0. .1..0. .0..1. .0..0. .0..1. .1..0. .0..0. .0..0 %e A285158 ..0..0. .0..0. .0..0. .0..1. .0..0. .1..0. .1..1. .0..1. .1..0. .0..1 %e A285158 ..1..0. .1..0. .0..0. .0..1. .0..1. .0..1. .1..0. .0..0. .1..1. .1..0 %e A285158 ..1..0. .0..1. .1..0. .0..0. .1..1. .0..1. .0..1. .1..0. .1..1. .0..0 %e A285158 ..1..0. .1..0. .0..1. .0..1. .1..0. .1..0. .0..0. .1..1. .1..1. .1..0 %e A285158 ..0..0. .0..0. .0..1. .1..0. .0..1. .1..0. .0..0. .0..0. .1..0. .1..0 %Y A285158 Cf. A285152. %K A285158 nonn %O A285158 1,2 %A A285158 _R. H. Hardin_, Apr 12 2017