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%I #6 Mar 31 2012 12:36:01
%S 1169,21834,308692,3959167,46410729,493061605,4845252741,45945546278,
%T 443977171724,4605035061272,52677880798334,659609567593921,
%U 8802320668197926,122014363451316512,1727721369461575287
%N Number of (n+2)X(n+2) 0..2 arrays with each 3X3 subblock having rows and columns in lexicographically nondecreasing order
%C Diagonal of A185477
%H R. H. Hardin, <a href="/A185468/b185468.txt">Table of n, a(n) for n = 1..26</a>
%e Some solutions for 4X4
%e ..0..0..0..2....0..0..0..0....0..0..2..2....0..0..0..2....0..0..1..1
%e ..0..0..1..2....1..1..1..2....0..0..2..2....0..1..2..2....0..1..1..1
%e ..0..1..1..2....1..1..2..0....0..0..2..2....0..2..1..1....0..1..1..2
%e ..1..2..2..0....1..1..2..1....1..1..1..2....0..2..1..1....2..2..2..0
%K nonn
%O 1,1
%A _R. H. Hardin_ Jan 28 2011
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