A264661 - OEIS

A264661

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

1, 8, 314, 20940, 3084352, 726042624, 284038382592

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OFFSET

1,2

COMMENTS

Row 3 of A264659.

LINKS

EXAMPLE

Some solutions for n=5

..0..2.10..6..5....0.12..6..2.10....0.10..6..1..7....0.10..7..5..1

..8..7.11..3..1....8..7.11.13..5....8..5.11..9.13....4..2.12..6.11

.14.12..4..9.13....4.14..1..9..3....4.12..2.14..3...14..8.13..9..3

CROSSREFS

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 20 2015

STATUS

approved