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 A208032 #7 Dec 22 2021 18:10:18 %S A208032 28,784,5404,61292,574560,5788524,56728924,561913408,5542832148, %T A208032 54764938004,540744613920,5340655599188,52741354585556, %U A208032 520866777405464,5143921470354156,50800175218659076,501689190833405736 %N A208032 Number of 7 X n 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 0 and 1 0 1 vertically. %C A208032 Row 7 of A208028. %H A208032 R. H. Hardin, <a href="/A208032/b208032.txt">Table of n, a(n) for n = 1..210</a> %F A208032 Empirical: a(n) = 5*a(n-1) +62*a(n-2) -73*a(n-3) -736*a(n-4) +779*a(n-5) +3097*a(n-6) -3814*a(n-7) -4207*a(n-8) +5531*a(n-9) +2469*a(n-10) -2932*a(n-11) -644*a(n-12) +428*a(n-13). %e A208032 Some solutions for n=4 %e A208032 ..1..0..1..1....0..1..0..1....0..1..1..0....0..1..1..0....1..0..1..0 %e A208032 ..1..0..1..0....0..1..0..0....1..0..1..0....0..1..0..1....0..1..0..1 %e A208032 ..0..1..0..0....1..0..1..0....1..0..1..1....1..1..0..1....0..1..0..0 %e A208032 ..0..1..0..1....1..0..1..1....1..1..1..1....0..1..1..0....1..0..1..0 %e A208032 ..1..1..1..0....0..1..1..0....1..1..1..1....0..1..0..0....1..0..1..1 %e A208032 ..1..0..1..0....0..1..0..0....1..1..1..1....1..1..0..1....0..1..0..0 %e A208032 ..1..0..1..1....1..1..0..1....1..1..1..1....0..1..1..0....0..1..0..0 %Y A208032 Cf. A208028. %K A208032 nonn %O A208032 1,1 %A A208032 _R. H. Hardin_ Feb 22 2012