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%I #5 Mar 31 2012 12:37:05
%S 2504,61320,1373400,24657580,431119786,6934715463,111837040063,
%T 1771131367142,28327757365626,453494114475033,7305871237209949,
%U 117969494611489634,1909620189311351615,30943236980670320787
%N Number of (n+1)X3 0..3 arrays with the permanents of 2X2 subblocks nondecreasing rightwards and downwards
%C Column 2 of A205181
%H R. H. Hardin, <a href="/A205175/b205175.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=4
%e ..0..1..0....2..0..3....0..1..1....2..3..1....1..3..2....2..1..0....1..3..2
%e ..2..3..2....0..0..2....1..3..3....1..1..3....3..1..3....3..0..3....0..1..0
%e ..1..1..1....1..1..0....3..2..2....3..3..1....2..3..2....0..1..2....2..0..2
%e ..3..3..3....2..1..3....1..3..3....0..2..3....2..3..2....3..1..1....2..1..3
%e ..1..1..1....1..1..2....3..2..2....3..2..3....2..3..3....1..1..3....0..1..1
%K nonn
%O 1,1
%A _R. H. Hardin_ Jan 22 2012
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