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 A232285 #6 Jul 23 2025 07:15:07 %S A232285 243,1189,184115,14477600,906702319,52334662011,3511626721526, %T A232285 245793785749534,16580471259914669,1088358893539229259, %U A232285 71948883431038065889,4812375868588744961836,322008140703858600669198 %N A232285 Number of 5Xn 0..2 arrays with no element less than a strict majority of its horizontal, diagonal and antidiagonal neighbors. %C A232285 Row 5 of A232281 %H A232285 R. H. Hardin, <a href="/A232285/b232285.txt">Table of n, a(n) for n = 1..210</a> %e A232285 Some solutions for n=2 %e A232285 ..1..0....0..2....2..2....2..0....0..1....2..0....0..2....0..0....2..1....0..2 %e A232285 ..0..0....0..0....2..2....0..2....0..0....0..0....0..0....2..1....0..0....0..0 %e A232285 ..0..0....1..0....2..2....0..0....0..0....0..0....0..0....0..0....0..0....0..0 %e A232285 ..1..1....0..2....2..2....1..0....0..2....1..1....0..1....0..0....2..0....1..2 %e A232285 ..1..1....2..0....0..0....0..2....0..0....0..0....2..0....2..2....0..2....1..1 %K A232285 nonn %O A232285 1,1 %A A232285 _R. H. Hardin_, Nov 22 2013