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 A231650 #6 Jul 23 2025 06:36:22 %S A231650 292,13560,3929027,765163605,161357952814,35384751611050, %T A231650 7673178325424236,1659606986967401246,359651366294031374125, %U A231650 77952234653703371179457,16890753872192197103219139 %N A231650 Number of nX7 0..2 arrays with no element less than a strict majority of its horizontal and vertical neighbors. %C A231650 Column 7 of A231651 %H A231650 R. H. Hardin, <a href="/A231650/b231650.txt">Table of n, a(n) for n = 1..161</a> %e A231650 Some solutions for n=3 %e A231650 ..0..0..2..2..2..2..2....0..0..2..2..0..0..0....0..0..0..0..2..2..1 %e A231650 ..0..0..1..1..0..0..2....0..0..2..2..0..1..2....0..0..0..0..0..0..1 %e A231650 ..0..0..0..0..0..0..2....0..0..0..0..0..1..1....0..1..0..0..0..0..1 %K A231650 nonn %O A231650 1,1 %A A231650 _R. H. Hardin_, Nov 12 2013