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%I #7 Mar 31 2012 12:36:00
%S 14178,993538,57374460,2943827443,136680720320,5891845723505,
%T 236912838360594,8847094859463950,307617377912743450,
%U 10100655820839334144,321449766112998837176,10305126469064160258992
%N Number of (n+2)X(n+2) 0..3 arrays with each 3X3 subblock having rows and columns in lexicographically nondecreasing order
%C Diagonal of A184574
%H R. H. Hardin, <a href="/A184565/b184565.txt">Table of n, a(n) for n = 1..15</a>
%e Some solutions for 4X4
%e ..0..0..0..0....0..0..0..2....0..0..0..2....0..0..0..0....0..0..0..0
%e ..0..0..1..3....0..0..1..2....0..0..1..3....0..0..1..3....0..0..1..2
%e ..0..2..3..2....1..1..3..3....0..0..2..2....2..2..3..3....0..2..2..2
%e ..3..3..3..0....3..3..3..1....1..3..0..0....3..3..3..3....0..3..1..1
%K nonn
%O 1,1
%A _R. H. Hardin_ Jan 17 2011
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