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 A301846 #4 Mar 27 2018 14:35:43 %S A301846 32,2048,23909,414385,6196305,97439921,1518341751,23681717605, %T A301846 370162554361,5783766875077,90425278777100,1414012375653788, %U A301846 22113880913447546,345860482462563671,5409344555270493414 %N A301846 Number of 6Xn 0..1 arrays with every element equal to 0, 1 or 2 horizontally or antidiagonally adjacent elements, with upper left element zero. %C A301846 Row 6 of A301841. %H A301846 R. H. Hardin, <a href="/A301846/b301846.txt">Table of n, a(n) for n = 1..210</a> %e A301846 Some solutions for n=5 %e A301846 ..0..0..0..0..0. .0..0..0..0..1. .0..0..0..0..0. .0..0..0..0..1 %e A301846 ..1..1..1..0..1. .1..1..0..0..0. .1..1..1..1..0. .1..1..0..0..1 %e A301846 ..0..1..1..0..1. .0..1..1..1..1. .0..0..1..0..1. .0..1..0..0..1 %e A301846 ..0..1..0..0..1. .0..0..0..1..0. .0..1..0..0..1. .0..1..0..1..1 %e A301846 ..0..1..0..1..0. .1..1..0..1..0. .0..1..0..1..0. .1..1..0..1..1 %e A301846 ..1..0..1..1..1. .0..0..1..0..1. .0..1..0..1..1. .1..0..0..1..0 %Y A301846 Cf. A301841. %K A301846 nonn %O A301846 1,1 %A A301846 _R. H. Hardin_, Mar 27 2018