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%I #5 Dec 18 2015 18:18:33
%S 4,160,9731,638996,41991129,2701569493,169750613182,10454910167463,
%T 634179969235617,38050532050437859
%N Number of n X n 0..3 arrays with rows and columns unimodal and antidiagonals nondecreasing
%C Diagonal of A224050
%e Some solutions for n=3
%e ..3..2..1....2..2..1....1..0..0....0..2..2....0..1..0....2..1..0....2..1..0
%e ..3..3..1....2..2..2....3..2..0....2..3..0....1..1..3....2..2..0....2..2..3
%e ..3..3..0....3..2..2....3..3..0....3..2..0....3..3..0....2..2..0....2..3..0
%K nonn
%O 1,1
%A _R. H. Hardin_ Apr 01 2013