A264711 - OEIS

A264711

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

1, 4, 152, 8064, 789696, 120512448, 29928517632

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

Row 3 of A264709.

LINKS

EXAMPLE

Some solutions for n=4

..0..1..7.10....0..6.10..7....0..9..1..7....9..6..0..7....0..9..4..7

..6..8..2.11....9..1..4..8....6..4.11..8....3..1..8..2....6..3.10..1

..3..9..4..5....3.11..5..2....3.10..5..2...10..4..5.11....8..5.11..2

CROSSREFS

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 21 2015

STATUS

approved