A264694 Number of 3Xn arrays of permutations of 0..n*3-1 with rows nondecreasing modulo 3 and columns nondecreasing modulo 5.

1, 6, 80, 3196, 171962, 17647792, 2685878592

Offset: 1

Author

R. H. Hardin, Nov 21 2015

Keywords

• nonn

Comments

Row 3 of A264692.

Examples

			Some solutions for n=5
..0.10.11..8..5....0..6.11..8..5....3.10..2..5.11....0..3.12..1.10
..3..6.12.13..2...10..1..7.14..2....9..0.12..6..1....6..9.13..2..5
..9..1..7..4.14....9.12..3..4.13....4..7.13..8.14....7..4..8.14.11
		

Crossrefs

Cf. A264692.