A264795 Number of 2Xn arrays of permutations of 0..n*2-1 with rows nondecreasing modulo 2 and columns nondecreasing modulo 7.

1, 3, 15, 130, 1944, 40188, 1149120, 49148112, 2541311040, 156667403520, 11530576378368

Offset: 1

Author

R. H. Hardin, Nov 25 2015

Keywords

• nonn

Comments

Row 2 of A264794.

Examples

			Some solutions for n=6
..8..2..0..4..9..7...10..0..2..8..4..1....2..4..0..1..3..7....8..0..1..7..3..9
..6.10..3..5.11..1....6..7..9..3.11..5...10..6..8..9..5.11....4..6.10..2..5.11
		

Crossrefs

Cf. A264794.