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%I #8 Jun 09 2023 23:00:57
%S 8,140,252,2490,1445712,2244318652,80495995176,4031708477982
%N Number of n X n 0..7 arrays with every row and column nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.
%C Diagonal of A201101.
%e Some solutions for n=4
%e ..0..0..3..3....0..0..1..4....0..0..2..3....0..0..3..5....0..0..3..4
%e ..1..1..4..6....1..2..5..5....1..2..4..6....1..1..4..5....1..1..5..5
%e ..2..4..5..6....2..3..6..7....1..3..5..7....2..2..6..6....2..2..6..7
%e ..2..5..7..7....3..4..6..7....4..5..6..7....3..4..7..7....3..4..6..7
%Y Cf. A201101.
%K nonn
%O 1,1
%A _R. H. Hardin_, Nov 26 2011