%I #4 Mar 31 2012 12:36:43
%S 1,51,758,13009,120096,1268728,8360853,58395657,309819522,1599103606,
%T 6891312239,29648211631,108584697209,395584327260,1292379405268,
%U 4136956355752,12134954233672,35217094178978
%N Number of nX6 0..5 arrays with every row and column nondecreasing rightwards and downwards, and the number of instances of each value within one of each other
%C Column 6 of A201142
%e Some solutions for n=4
%e ..0..0..0..0..3..4....0..0..1..1..2..3....0..0..0..1..2..4....0..0..0..0..3..3
%e ..1..1..2..2..3..4....0..0..1..2..3..3....0..1..1..2..3..4....1..1..2..2..4..4
%e ..1..1..2..2..4..5....1..2..4..4..5..5....1..2..2..3..3..4....1..2..3..3..4..5
%e ..3..3..4..5..5..5....2..3..4..4..5..5....3..4..5..5..5..5....1..2..4..5..5..5
%K nonn
%O 1,2
%A _R. H. Hardin_ Nov 27 2011