%I #5 Mar 31 2012 12:37:00
%S 406,91396,32094464,14543414270,7208336070660,3601865763979034,
%T 1772878084052954152
%N Number of (n+1)X(n+1) 0..5 arrays with column and row pair sums b(i,j)=a(i,j)+a(i,j-1) and c(i,j)=a(i,j)+a(i-1,j) nondecreasing in column and row directions, respectively
%C Diagonal of A203944
%e Some solutions for n=4
%e ..1..0..4..3..4....1..4..0..5..5....1..5..2..3..3....4..5..4..4..4
%e ..2..4..3..4..3....4..1..5..5..5....4..2..5..4..4....5..4..5..5..5
%e ..3..3..4..3..5....2..5..5..5..5....1..5..4..5..5....4..5..5..5..5
%e ..3..5..4..5..5....2..5..5..5..5....3..4..5..5..5....4..5..5..5..5
%e ..5..4..5..5..5....2..5..5..5..5....5..4..5..5..5....4..5..5..5..5
%K nonn
%O 1,1
%A _R. H. Hardin_ Jan 08 2012