A264700 Number of 3Xn arrays of permutations of 0..n*3-1 with rows nondecreasing modulo 4 and columns nondecreasing modulo 5.

1, 3, 68, 1541, 37595, 1947196, 148906136, 15063986288

Offset: 1

Author

R. H. Hardin, Nov 21 2015

Keywords

• nonn

Comments

Row 3 of A264698.

Examples

			Some solutions for n=5
..0.12.10..6.11....0..8..5.10..6....0..1..9..5.10...12..0..5..1.11
..5..9..1..3..7....2.14..7..3.11....6..2.14..3.11....8..6.10..7..3
..8..4.13.14..2...12..4..9.13..1...12..8..4.13..7....4..9.13..2.14
		

Crossrefs

Cf. A264698.