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Number of 3Xn arrays of permutations of 0..n*3-1 with rows nondecreasing modulo 5 and columns nondecreasing modulo 6.
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%I #3 Nov 21 2015 08:34:01

%S 1,2,40,803,23775,468540,17266449,741373873

%N Number of 3Xn arrays of permutations of 0..n*3-1 with rows nondecreasing modulo 5 and columns nondecreasing modulo 6.

%C Row 3 of A264714.

%e Some solutions for n=5

%e .10..0..6..1.14....0..1.12..7..2...10..0..6..1.12....0..6..1.13..8

%e ..5..7.12..8..9....6.11.13..9.14...11..2..7..3.13...11.12..2..7..3

%e .11..2.13..3..4...10..5..8..3..4....5..8.14..4..9....5.10..4.14..9

%Y Cf. A264714.

%K nonn

%O 1,2

%A _R. H. Hardin_, Nov 21 2015