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

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

Offset: 1

Author

R. H. Hardin, Nov 25 2015

Keywords

• nonn

Comments

Row 3 of A264794.

Examples

			Some solutions for n=4
..0..8.11..7....0..2..8..7....8..0..3..7....0..2..8..7....0..1..9..7
..9..1..5..3...10..9..1.11....1..9.11..5...11..5..1..9....4..8.10..2
..2.10..6..4....6..4..3..5...10..2..4..6....4..6.10..3....6.11..5..3
		

Crossrefs

Cf. A264794.