cp's OEIS Frontend

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.

A238285 Number of (n+1)X(5+1) 0..3 arrays with no element greater than all horizontal neighbors or less than all vertical neighbors.

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%I A238285 #6 Jul 23 2025 10:49:57
%S A238285 422,105862,12926271,1058583000,87389474502,8155057418133,
%T A238285 790756782942944,75089860262272452,7004416705370946171,
%U A238285 653041012099727601632,61178043367269083858961,5741681272912802081072135
%N A238285 Number of (n+1)X(5+1) 0..3 arrays with no element greater than all horizontal neighbors or less than all vertical neighbors.
%C A238285 Column 5 of A238287
%H A238285 R. H. Hardin, <a href="/A238285/b238285.txt">Table of n, a(n) for n = 1..162</a>
%e A238285 Some solutions for n=2
%e A238285 ..2..2..2..3..3..3....3..3..2..0..2..2....0..0..0..2..2..0....2..2..1..1..0..0
%e A238285 ..0..2..2..1..1..1....3..3..1..0..1..1....0..0..0..2..2..0....0..1..1..1..0..0
%e A238285 ..0..3..3..1..1..1....3..3..1..1..1..1....0..2..3..3..2..2....0..1..3..3..3..2
%K A238285 nonn
%O A238285 1,1
%A A238285 _R. H. Hardin_, Feb 22 2014