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 A300810 #4 Mar 13 2018 07:54:08 %S A300810 64,5536,205369,8363710,343667594,14189038853,585611214958, %T A300810 24166702223161,997271941003944,41155002052053688,1698364186084410971, %U A300810 70087264998653292977,2892325757357593824036,119359046546325613534455 %N A300810 Number of nX7 0..1 arrays with every element equal to 0, 1, 2, 3 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. %C A300810 Column 7 of A300811. %H A300810 R. H. Hardin, <a href="/A300810/b300810.txt">Table of n, a(n) for n = 1..210</a> %e A300810 Some solutions for n=5 %e A300810 ..0..0..0..1..0..0..1. .0..0..0..1..1..0..0. .0..0..0..1..1..0..1 %e A300810 ..0..1..0..0..1..0..0. .0..1..0..1..0..1..1. .0..1..0..1..1..0..1 %e A300810 ..0..0..1..0..1..1..0. .0..0..0..1..1..1..0. .0..0..0..0..1..0..1 %e A300810 ..0..1..0..0..1..1..0. .0..0..1..0..0..0..1. .0..0..0..0..0..1..0 %e A300810 ..0..0..1..0..0..0..1. .1..1..0..1..1..1..0. .1..0..1..1..0..1..1 %Y A300810 Cf. A300811. %K A300810 nonn %O A300810 1,1 %A A300810 _R. H. Hardin_, Mar 13 2018