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 A232143 #6 Jul 23 2025 06:54:47 %S A232143 136384,122721280,100495188564,85000031249096,71938229899528156, %T A232143 60960050569112225624,51664900164122521134304, %U A232143 43790619829816652015279660,37116830858835534221481687436,31460303395632890116635219172352 %N A232143 Number of (6+1)X(n+1) 0..2 arrays with no element equal to a strict majority of its horizontal and antidiagonal neighbors, with values 0..2 introduced in row major order. %C A232143 Row 6 of A232137 %H A232143 R. H. Hardin, <a href="/A232143/b232143.txt">Table of n, a(n) for n = 1..31</a> %e A232143 Some solutions for n=1 %e A232143 ..0..1....0..1....0..1....0..1....0..1....0..1....0..1....0..1....0..1....0..1 %e A232143 ..0..1....0..1....0..2....0..0....0..2....0..2....0..1....0..1....2..0....2..0 %e A232143 ..0..1....2..0....1..1....2..1....1..2....0..1....1..2....0..0....1..0....2..1 %e A232143 ..0..1....1..0....2..0....1..2....1..1....0..1....2..0....2..0....1..1....0..0 %e A232143 ..2..0....2..0....1..1....2..1....0..2....2..2....1..1....1..1....2..0....2..0 %e A232143 ..2..2....0..2....2..2....1..0....1..0....0..0....2..1....0..0....2..1....1..2 %e A232143 ..0..2....0..1....1..2....0..1....1..0....2..0....2..1....2..1....1..0....0..2 %K A232143 nonn %O A232143 1,1 %A A232143 _R. H. Hardin_, Nov 19 2013