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%I #5 Dec 18 2015 18:18:33
%S 3,54,1232,27246,568107,11231300,212819499,3903149379,69818587635,
%T 1225169731998
%N Number of n X n 0..2 arrays with rows and columns unimodal and antidiagonals nondecreasing
%C Diagonal of A224057
%e Some solutions for n=3
%e ..2..1..1....0..1..0....0..0..0....2..1..0....1..1..0....2..0..0....0..0..0
%e ..2..1..1....1..1..1....2..2..0....2..0..0....1..2..0....2..1..1....0..0..2
%e ..1..2..1....1..1..0....2..2..2....0..0..0....2..2..1....2..2..1....1..2..0
%K nonn
%O 1,1
%A _R. H. Hardin_ Mar 30 2013