A264819 Number of 2Xn arrays of permutations of 0..n*2-1 with rows nondecreasing modulo 3 and columns nondecreasing modulo 7.

1, 1, 8, 44, 348, 3946, 52524, 1041936, 22648272, 828481536, 26112652416, 1017144989568, 50591916092160

Offset: 1

Author

R. H. Hardin, Nov 25 2015

Keywords

• nonn

Comments

Row 2 of A264818.

Examples

			Some solutions for n=7
..3..9..0..1..7.11..8...12..9..3..0..7.11..8...12..3..0..9..4..1..7
.12..6.13.10..4..5..2....6.13.10..1..4..5..2....6.13.10..5.11..8..2
		

Crossrefs

Cf. A264818.