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A264711 Number of 3Xn arrays of permutations of 0..n*3-1 with rows nondecreasing modulo 3 and columns nondecreasing modulo 6.

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%I A264711 #3 Nov 21 2015 08:20:59
%S A264711 1,4,152,8064,789696,120512448,29928517632
%N A264711 Number of 3Xn arrays of permutations of 0..n*3-1 with rows nondecreasing modulo 3 and columns nondecreasing modulo 6.
%C A264711 Row 3 of A264709.
%e A264711 Some solutions for n=4
%e A264711 ..0..1..7.10....0..6.10..7....0..9..1..7....9..6..0..7....0..9..4..7
%e A264711 ..6..8..2.11....9..1..4..8....6..4.11..8....3..1..8..2....6..3.10..1
%e A264711 ..3..9..4..5....3.11..5..2....3.10..5..2...10..4..5.11....8..5.11..2
%Y A264711 Cf. A264709.
%K A264711 nonn
%O A264711 1,2
%A A264711 _R. H. Hardin_, Nov 21 2015

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