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%I #6 Dec 18 2015 18:17:56
%S 4,90,15688,27871870,550113111784
%N Number of n X n 0..3 arrays with the row and column sums nondecreasing
%C Diagonal of A202581
%e Some solutions for n=3
%e ..0..1..0....1..0..1....0..1..2....0..1..2....0..1..1....0..2..1....1..1..0
%e ..1..0..3....0..1..3....0..3..0....0..2..2....2..0..2....1..1..2....2..0..1
%e ..2..3..1....3..3..0....1..0..2....2..0..3....1..2..3....0..3..3....0..2..3
%K nonn
%O 1,1
%A _R. H. Hardin_ Dec 21 2011
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