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A264660 Number of 2Xn arrays of permutations of 0..n*2-1 with rows nondecreasing modulo 2 and columns nondecreasing modulo 5. 0
1, 3, 16, 148, 2400, 62800, 2150784, 89051520, 4376959488, 264110948352 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row 2 of A264659.

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions for n=5

..2..0..6..5..1....0..7..9..1..5....0..8..1..7..5....2..0..5..3..1

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

CROSSREFS

Cf. A264659.

Sequence in context: A294003 A006058 A121588 * A214933 A230323 A217251

Adjacent sequences:  A264657 A264658 A264659 * A264661 A264662 A264663

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 20 2015

STATUS

approved

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Last modified February 22 11:16 EST 2018. Contains 299452 sequences. (Running on oeis4.)