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A264796 Number of 3Xn arrays of permutations of 0..n*3-1 with rows nondecreasing modulo 2 and columns nondecreasing modulo 7. 0

%I

%S 1,6,170,9656,1369408,275062400,89203565824

%N Number of 3Xn arrays of permutations of 0..n*3-1 with rows nondecreasing modulo 2 and columns nondecreasing modulo 7.

%C Row 3 of A264794.

%e Some solutions for n=4

%e ..0..8.11..7....0..2..8..7....8..0..3..7....0..2..8..7....0..1..9..7

%e ..9..1..5..3...10..9..1.11....1..9.11..5...11..5..1..9....4..8.10..2

%e ..2.10..6..4....6..4..3..5...10..2..4..6....4..6.10..3....6.11..5..3

%Y Cf. A264794.

%K nonn

%O 1,2

%A _R. H. Hardin_, Nov 25 2015

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Last modified June 27 04:37 EDT 2022. Contains 354888 sequences. (Running on oeis4.)