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 A318074 #4 Aug 15 2018 13:20:16 %S A318074 64,190,404,861,2195,9966,46884,184156,819263,3703730,15865269, %T A318074 69944965,310937380,1361781447,5998215467,26503896368,116659469704, %U A318074 513984726015,2266966511804,9989194862172,44021107304800,194059543279029 %N A318074 Number of nX7 0..1 arrays with every element unequal to 0, 1, 2 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. %C A318074 Column 7 of A318075. %H A318074 R. H. Hardin, <a href="/A318074/b318074.txt">Table of n, a(n) for n = 1..210</a> %e A318074 Some solutions for n=5 %e A318074 ..0..1..1..1..1..1..1. .0..0..1..1..1..1..1. .0..0..0..0..0..0..0 %e A318074 ..1..1..1..1..1..1..1. .0..1..1..1..1..1..1. .0..1..1..0..0..0..0 %e A318074 ..1..1..1..1..1..0..1. .1..1..0..1..1..0..1. .0..0..0..0..1..0..0 %e A318074 ..1..0..0..1..0..1..1. .1..0..1..1..1..0..1. .0..0..0..1..0..0..0 %e A318074 ..1..1..1..1..1..1..0. .1..1..1..1..1..1..1. .0..0..0..0..0..0..1 %Y A318074 Cf. A318075. %K A318074 nonn %O A318074 1,1 %A A318074 _R. H. Hardin_, Aug 15 2018