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 A302527 #4 Apr 09 2018 09:24:03 %S A302527 8,98,730,5942,128242,1275348,16130212,303355178,3654880956, %T A302527 51530586242,829503866128,11159474949120,160761590077504, %U A302527 2423517947094100,34130627941733812,494058647385825910,7263463498716354406 %N A302527 Number of nX7 0..1 arrays with every element equal to 1, 2, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. %C A302527 Column 7 of A302528. %H A302527 R. H. Hardin, <a href="/A302527/b302527.txt">Table of n, a(n) for n = 1..210</a> %e A302527 Some solutions for n=5 %e A302527 ..0..0..1..1..1..0..0. .0..0..0..0..1..1..0. .0..0..0..1..0..1..1 %e A302527 ..0..1..1..0..1..1..1. .1..1..1..1..0..0..0. .1..1..1..1..0..0..1 %e A302527 ..0..1..0..1..1..1..1. .0..1..0..1..0..1..1. .0..0..0..1..0..1..0 %e A302527 ..0..0..1..1..1..0..0. .1..0..1..1..0..1..1. .1..0..1..1..0..0..0 %e A302527 ..1..1..0..0..1..1..0. .0..1..0..0..1..0..1. .0..1..0..1..0..1..1 %Y A302527 Cf. A302528. %K A302527 nonn %O A302527 1,1 %A A302527 _R. H. Hardin_, Apr 09 2018