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A233111 Number of nX6 0..5 arrays with no element x(i,j) adjacent to value 5-x(i,j) horizontally or vertically, top left element zero, and 1 appearing before 2 3 and 4, and 2 appearing before 3 in row major order.

%I A233111 #6 Jul 23 2025 07:53:29
%S A233111 452,2565169,16683923848,109015274761891,712427482567592092,
%T A233111 4655818309443587944819,30426461543542804692390703,
%U A233111 198841429156093687790582460286,1299458167307093973096933933936847
%N A233111 Number of nX6 0..5 arrays with no element x(i,j) adjacent to value 5-x(i,j) horizontally or vertically, top left element zero, and 1 appearing before 2 3 and 4, and 2 appearing before 3 in row major order.
%C A233111 Column 6 of A233113
%H A233111 R. H. Hardin, <a href="/A233111/b233111.txt">Table of n, a(n) for n = 1..210</a>
%e A233111 Some solutions for n=2
%e A233111 ..0..1..0..2..4..5....0..0..0..1..2..1....0..0..1..2..2..0....0..0..1..1..5..5
%e A233111 ..0..0..0..4..3..1....0..0..4..0..1..5....0..1..2..1..0..1....0..0..2..5..1..5
%K A233111 nonn
%O A233111 1,1
%A A233111 _R. H. Hardin_, Dec 04 2013