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A264644 Number of 2Xn arrays of permutations of 0..n*2-1 with rows nondecreasing modulo 3 and columns nondecreasing modulo 4. 0
1, 1, 8, 55, 572, 5928, 113808, 2536688, 79981184, 2501785344, 102724061184, 4063172935680, 228978765692928 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Row 2 of A264643.

LINKS

Table of n, a(n) for n=1..13.

EXAMPLE

Some solutions for n=4

..4..1..2..5....0..6..1..4....0..7..1..4....3..0..6..1....0..7..4..1

..0..3..6..7....3..7..2..5....6..3..5..2....7..4..2..5....6..3..2..5

CROSSREFS

Cf. A264643.

Sequence in context: A264342 A230963 A209114 * A144748 A160429 A003722

Adjacent sequences:  A264641 A264642 A264643 * A264645 A264646 A264647

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 19 2015

STATUS

approved

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Last modified January 19 22:12 EST 2022. Contains 350466 sequences. (Running on oeis4.)