A264658 Number of nX3 arrays of permutations of 0..n*3-1 with rows nondecreasing modulo 2 and columns nondecreasing modulo 5.

2, 16, 314, 8944, 437568, 31791360, 3066123264, 406160345088, 70968026548224, 13709138003785728, 4238166931305725952, 1459157049949984653312, 568249220657313642184704, 293392338436637335329177600, 174302684151000442129612800000, 120748695251265619859865600000000

Offset

1,1

Comments

Column 3 of A264659.

Links

Table of n, a(n) for n=1..16.

Example

Some solutions for n=5
..0..5..1....0..7..5....0.11..5....0.11..5....0..1..5....0..2..6....0..2..5
.10..6.11...10.12.11...10.12..1...10..6.13...10..6.12...10.12.11...10.12.11
.12..2..7....6.14..8....8..2..6....7..1..3...11..7..3....5..7.13....6..3..7
.13..3..9....1..9..3....9..3..7...12..2..8....2..9.13....1..3..9....1..9.13
.14..8..4....2..4.13...14..4.13...14..4..9....8..4.14...14..8..4....8..4.14

Crossrefs

Cf. A264659.

Sequence in context: A335618 A174487 A140051 * A223675 A386532 A189058

Adjacent sequences: A264655 A264656 A264657 * A264659 A264660 A264661

Keyword

nonn

Author

R. H. Hardin, Nov 20 2015

Extensions

More terms from Bert Dobbelaere, May 10 2026

Status

approved