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 A231422 #6 Jul 23 2025 06:29:02 %S A231422 285,15125,844061,46978621,2655479347,149618567148,8438399440722, %T A231422 475900619492206,26841006150186265,1513850582045527801, %U A231422 85382577970170683674,4815661653900157997070,271608188052392844879540 %N A231422 Number of (3+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 A231422 Row 3 of A231419 %H A231422 R. H. Hardin, <a href="/A231422/b231422.txt">Table of n, a(n) for n = 1..210</a> %e A231422 Some solutions for n=2 %e A231422 ..0..0..1....0..1..0....0..1..1....0..1..0....0..1..0....0..1..2....0..1..0 %e A231422 ..2..2..2....0..2..0....0..2..0....1..2..1....0..2..2....1..0..0....0..2..0 %e A231422 ..1..1..1....0..2..0....1..2..1....0..2..0....0..0..1....1..2..0....2..0..2 %e A231422 ..0..2..1....0..1..2....0..1..0....1..0..2....2..2..0....1..1..2....1..1..2 %K A231422 nonn %O A231422 1,1 %A A231422 _R. H. Hardin_, Nov 08 2013