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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
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
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 21 2015
STATUS
approved

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Last modified February 23 04:31 EST 2024. Contains 370267 sequences. (Running on oeis4.)