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A264645 Number of 3Xn arrays of permutations of 0..n*3-1 with rows nondecreasing modulo 3 and columns nondecreasing modulo 4.

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%I A264645 #3 Nov 19 2015 13:54:20
%S A264645 1,6,149,5080,364544,46305472,6958619648
%N A264645 Number of 3Xn arrays of permutations of 0..n*3-1 with rows nondecreasing modulo 3 and columns nondecreasing modulo 4.
%C A264645 Row 3 of A264643.
%e A264645 Some solutions for n=4
%e A264645 ..9..0..4..1....4..1..5..8....0..4.10..8....9..0..6..4....0.11..5..8
%e A264645 .11..2..8..5....0..9..3..2....9..1..7..5...10..1..2..8....4..7..1..2
%e A264645 ..3..6..7.10....6.10..7.11....6..3.11..2....3..7.11..5....9..3..6.10
%Y A264645 Cf. A264643.
%K A264645 nonn
%O A264645 1,2
%A A264645 _R. H. Hardin_, Nov 19 2015

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