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 A293085 #6 Apr 05 2020 23:39:49 %S A293085 1,518,32070,1900201,112687158,6736259130,405651046593,24578475941654, %T A293085 1496865603233666,91554912627879749,5620403258825580746, %U A293085 346108444488158412416,21371320222879037699886,1322739734613558463366865 %N A293085 Number of n X 6 0..1 arrays with the number of 1's horizontally or antidiagonally adjacent to some 0 two less than the number of 0's adjacent to some 1. %C A293085 Column 6 of A293087. %H A293085 R. H. Hardin, <a href="/A293085/b293085.txt">Table of n, a(n) for n = 1..144</a> %e A293085 Some solutions for n=3 %e A293085 ..0..1..1..1..0..0. .1..0..1..0..1..0. .0..0..0..1..1..0. .1..1..0..0..0..0 %e A293085 ..1..0..0..1..1..0. .0..1..0..0..0..0. .0..0..0..0..1..1. .1..0..0..1..0..0 %e A293085 ..0..1..0..0..1..0. .1..0..1..1..0..0. .0..1..0..0..0..1. .1..1..0..0..1..1 %Y A293085 Cf. A293087. %K A293085 nonn %O A293085 1,2 %A A293085 _R. H. Hardin_, Sep 30 2017