A264727 Number of n X 3 arrays of permutations of 0..n*3-1 with rows nondecreasing modulo 4 and columns nondecreasing modulo 6.

1, 4, 48, 474, 11552, 460672, 29777920, 1502334976, 122494021632

Offset

1,2

Comments

Column 3 of A264728.

Links

Table of n, a(n) for n=1..9.

Example

Some solutions for n=5
.12..0..1...12..1..6....0.12.13...12.13..7....0.13..7...12.13..1...12..6..7
.13..6..7....0.13..9...14..6..7....6..2.14....6.14..2....6.14..7....0..9.13
..8.10..2....2..7..3....9..1..3....0..8.10...12..9..3....0..9..3....1.10.14
.14.11..3...14.10.11....4..8.10....1..9..5....1.10.11....8..4..5....8..4..2
..4..5..9....8..4..5....5..2.11....4..3.11....8..4..5....2.10.11....5.11..3

Crossrefs

Cf. A264728.

Sequence in context: A298649 A299603 A026942 * A283049 A159903 A099671

Adjacent sequences: A264724 A264725 A264726 * A264728 A264729 A264730

Keyword

nonn

Author

R. H. Hardin, Nov 22 2015

Status

approved