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 A232278 #6 Jul 23 2025 07:14:26 %S A232278 51,6019,293426,17145989,906702319,47260154104,2527067273698, %T A232278 135096346014359,7180729990183315,381960169335469531, %U A232278 20341063307725322674,1082966644636722175982,57643872896878605089600 %N A232278 Number of nX5 0..2 arrays with no element less than a strict majority of its horizontal, diagonal and antidiagonal neighbors. %C A232278 Column 5 of A232281 %H A232278 R. H. Hardin, <a href="/A232278/b232278.txt">Table of n, a(n) for n = 1..210</a> %e A232278 Some solutions for n=3 %e A232278 ..0..1..0..1..0....2..0..0..0..0....1..0..1..2..1....0..0..2..2..1 %e A232278 ..0..0..1..0..0....0..0..2..0..2....0..1..0..1..1....0..1..0..0..2 %e A232278 ..2..0..0..0..1....1..0..0..2..1....2..0..0..0..0....0..0..0..2..0 %K A232278 nonn %O A232278 1,1 %A A232278 _R. H. Hardin_, Nov 22 2013