A264727 - OEIS

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

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OFFSET

1,2

COMMENTS

Column 3 of A264728.

LINKS

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

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 22 2015

STATUS

approved