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 A300370 #4 Mar 04 2018 09:08:50 %S A300370 0,2,8,22,92,366,1592,6925,36101,161645,762469,3571297,16723114, %T A300370 78166439,365870424,1715599255,8028145462,37613414368,176081584796, %U A300370 824491774631,3861712572473,18083391708768,84680125527458,396550577930555 %N A300370 Number of nX6 0..1 arrays with every element equal to 2 or 3 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. %C A300370 Column 6 of A300372. %H A300370 R. H. Hardin, <a href="/A300370/b300370.txt">Table of n, a(n) for n = 1..210</a> %e A300370 Some solutions for n=5 %e A300370 ..0..0..0..0..1..1. .0..0..1..0..0..1. .0..0..1..1..0..0. .0..0..1..1..1..1 %e A300370 ..0..1..1..0..1..1. .0..1..1..0..1..1. .0..1..1..0..1..0. .0..0..1..0..0..1 %e A300370 ..0..1..1..0..0..1. .1..0..0..1..0..1. .0..0..0..1..1..0. .1..1..0..1..0..1 %e A300370 ..0..0..1..0..1..0. .1..0..1..0..0..1. .1..1..0..0..0..1. .1..0..1..1..0..1 %e A300370 ..0..0..1..1..0..0. .1..1..1..0..1..1. .1..1..1..1..1..1. .0..0..0..0..1..1 %Y A300370 Cf. A300372. %K A300370 nonn %O A300370 1,2 %A A300370 _R. H. Hardin_, Mar 04 2018