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A233237 Number of nX6 0..5 arrays with no element x(i,j) adjacent to value 5-x(i,j) horizontally, diagonally or antidiagonally, top left element zero, and 1 appearing before 2 3 and 4, and 2 appearing before 3 in row major order.

%I A233237 #6 Jul 23 2025 07:57:44
%S A233237 452,1419889,5267525102,19645569858350,73288254642491677,
%T A233237 273407904115337411320,1019972250198681748495759,
%U A233237 3805096786515479736762977469,14195250676420681381695428272598
%N A233237 Number of nX6 0..5 arrays with no element x(i,j) adjacent to value 5-x(i,j) horizontally, diagonally or antidiagonally, top left element zero, and 1 appearing before 2 3 and 4, and 2 appearing before 3 in row major order.
%C A233237 Column 6 of A233239
%H A233237 R. H. Hardin, <a href="/A233237/b233237.txt">Table of n, a(n) for n = 1..210</a>
%e A233237 Some solutions for n=2
%e A233237 ..0..0..0..1..2..2....0..0..0..1..2..1....0..0..1..2..4..3....0..0..1..5..4..5
%e A233237 ..4..0..1..2..1..2....4..0..0..4..0..4....3..0..4..0..0..3....1..0..1..2..4..0
%K A233237 nonn
%O A233237 1,1
%A A233237 _R. H. Hardin_, Dec 06 2013