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%I #5 Mar 31 2012 12:35:50
%S 8748,589824,314928,435600,802944,1679616,3852288,9437184,23003136,
%T 47775744,95551488,191102976,389283840,807469056,1695744000,
%U 3588489216,7596343296,16057958400,33888927744,71430045696,150473539584
%N One quarter the number of nX9 1..4 arrays with no two neighbors of any element equal to each other
%C Column 9 of A183362
%H R. H. Hardin, <a href="/A183361/b183361.txt">Table of n, a(n) for n = 1..26</a>
%e Some solutions for 5X9 with a(1,1)=1
%e ..1..1..2..3..3..1..2..3..4....1..1..2..4..4..2..2..3..1
%e ..2..4..4..1..2..4..4..1..1....2..4..3..3..1..1..4..3..2
%e ..2..3..3..1..2..3..3..2..2....2..4..1..2..2..3..4..1..2
%e ..4..1..2..4..4..1..1..4..3....3..3..1..4..4..3..2..1..3
%e ..3..1..2..3..3..2..2..4..1....4..2..2..3..1..1..2..4..4
%K nonn
%O 1,1
%A _R. H. Hardin_ Jan 04 2011
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