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 A231424 #6 Jul 23 2025 06:29:15 %S A231424 9188,3245016,1378646988,576572713438,248018799189236, %T A231424 105946496489105569,45332709618289157734,19394314328543249729459, %U A231424 8297981425441388783508671,3550343374214975133494877631,1519044304273096909835045727359 %N A231424 Number of (5+1)X(n+1) 0..2 arrays with no element equal to a strict majority of its horizontal, diagonal and antidiagonal neighbors, with values 0..2 introduced in row major order. %C A231424 Row 5 of A231419 %H A231424 R. H. Hardin, <a href="/A231424/b231424.txt">Table of n, a(n) for n = 1..13</a> %e A231424 Some solutions for n=1 %e A231424 ..0..0....0..1....0..1....0..1....0..0....0..1....0..1....0..1....0..1....0..1 %e A231424 ..1..2....2..0....0..2....1..2....1..2....1..2....2..0....0..2....0..1....2..1 %e A231424 ..1..2....2..1....1..0....0..2....2..1....1..0....2..0....1..0....0..2....2..0 %e A231424 ..0..2....2..1....1..2....2..0....0..1....0..1....1..0....2..0....2..1....1..0 %e A231424 ..1..2....1..2....1..0....2..0....2..0....0..1....2..1....1..1....2..0....1..2 %e A231424 ..1..2....0..2....2..2....2..1....1..0....2..2....2..0....0..2....1..2....2..1 %K A231424 nonn %O A231424 1,1 %A A231424 _R. H. Hardin_, Nov 08 2013