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%I #3 Nov 26 2015 20:02:22
%S 1,5,30,839,15000,530302,7041672,211818498,5213013996
%N Number of nX3 arrays of permutations of 0..n*3-1 with rows nondecreasing modulo 6 and columns nondecreasing modulo 7.
%C Column 3 of A264862.
%e Some solutions for n=4
%e ..7..8..2....0..1..9....7..1..3....0..7..8....0..7..8....0..1..9....0..7.10
%e ..0..1.10....7..8..2....0..8.10....1..9..3....1..2..3....7..8..3....1..2..3
%e ..9..3.11....3..4.10....2..9..4....2..4.10....9.10..4....2..4.10....8..9..4
%e ..6..4..5....6..5.11....6..5.11....6.11..5....6..5.11....6.11..5....6.11..5
%Y Cf. A264862.
%K nonn
%O 1,2
%A _R. H. Hardin_, Nov 26 2015