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A264691 Number of nX3 arrays of permutations of 0..n*3-1 with rows nondecreasing modulo 3 and columns nondecreasing modulo 5. 0
1, 7, 80, 2051, 59845, 3406328, 233531136, 21272671232 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 3 of A264692.

LINKS

Table of n, a(n) for n=1..8.

EXAMPLE

Some solutions for n=5

.10..1..5....0..1.10....6.12..0....0..6..5....0.10..7....7.10..5....5.11..2

..0..7.11....6.12..5....8..2..5...10..1..7...11..5..2...12..0..6....0.12..3

..6.12..2...13..7.11...13..7.10...12.11..2...12..1.13....3..1..2...10..7.13

..3..8.14....3..8..2....3..9..1....4.13..8....9..6..3....8.11.14....6..9..8

..9.13..4....9..4.14....4.14.11....9..3.14....4..8.14....9.13..4....1..4.14

CROSSREFS

Cf. A264692.

Sequence in context: A115986 A295843 A085606 * A326223 A058785 A171768

Adjacent sequences:  A264688 A264689 A264690 * A264692 A264693 A264694

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 21 2015

STATUS

approved

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Last modified September 19 12:17 EDT 2020. Contains 337178 sequences. (Running on oeis4.)