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 A232140 #7 Jul 23 2025 06:54:27 %S A232140 328,14752,602468,25364480,1063744484,44671124016,1875654465544, %T A232140 78758608380688,3307040482438920,138861420876088764, %U A232140 5830738287776487908,244830499590623017720,10280340127332484865416,431667596881321790496532 %N A232140 Number of (3+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 A232140 Row 3 of A232137 %H A232140 R. H. Hardin, <a href="/A232140/b232140.txt">Table of n, a(n) for n = 1..210</a> %H A232140 R. H. Hardin, <a href="/A232140/a232140.txt">Empirical recurrence of order 76</a> %F A232140 Empirical recurrence of order 76 (see link above) %e A232140 Some solutions for n=2 %e A232140 ..0..1..2....0..1..2....0..1..0....0..1..0....0..1..1....0..1..1....0..1..1 %e A232140 ..1..0..0....1..0..0....0..1..2....2..2..2....0..0..2....2..2..0....2..0..0 %e A232140 ..1..2..0....1..2..1....1..0..1....1..1..1....1..1..2....1..2..0....0..2..1 %e A232140 ..1..2..1....1..0..1....1..2..0....0..2..1....0..0..1....1..0..2....0..1..2 %K A232140 nonn %O A232140 1,1 %A A232140 _R. H. Hardin_, Nov 19 2013