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A264690 Number of nX2 arrays of permutations of 0..n*2-1 with rows nondecreasing modulo 3 and columns nondecreasing modulo 5. 0
1, 1, 6, 23, 84, 897, 9292, 98776, 1380544, 20573376, 451512320, 8653964800, 238280574976, 6409517629440, 172949221113856 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Column 2 of A264692.

LINKS

Table of n, a(n) for n=1..15.

EXAMPLE

Some solutions for n=6

..0..5....0..5....5.11....0..5....0..1....0..1....0..5....6.10...10..1....0..5

.10.11....1.10...10..7....6.10....5.11....5.11....6.10....1..5....5.11....6.10

..6..2....8.11....0..2....7..1...10..2...10..2....1.11....3..0....0..6....1.11

..1..7....3..6....1..8....2.11....6..7....6..7....3..7....8.11....8..2....7..2

..3..8....4..7....6..3....4..8....9..3....3..8....8..2....9..7....4..7....4..8

..9..4....9..2....9..4....9..3....4..8....9..4....9..4....4..2....9..3....9..3

CROSSREFS

Cf. A264692.

Sequence in context: A078798 A027043 A006815 * A241394 A054491 A282710

Adjacent sequences:  A264687 A264688 A264689 * A264691 A264692 A264693

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 21 2015

STATUS

approved

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Last modified September 25 12:23 EDT 2020. Contains 337343 sequences. (Running on oeis4.)