A264795 Number of 2Xn arrays of permutations of 0..n*2-1 with rows nondecreasing modulo 2 and columns nondecreasing modulo 7.

1, 3, 15, 130, 1944, 40188, 1149120, 49148112, 2541311040, 156667403520, 11530576378368

Offset

1,2

Comments

Row 2 of A264794.

Links

Table of n, a(n) for n=1..11.

Example

Some solutions for n=6
..8..2..0..4..9..7...10..0..2..8..4..1....2..4..0..1..3..7....8..0..1..7..3..9
..6.10..3..5.11..1....6..7..9..3.11..5...10..6..8..9..5.11....4..6.10..2..5.11

Crossrefs

Cf. A264794.

Sequence in context: A074241 A228365 A117694 * A222390 A281186 A349590

Adjacent sequences: A264792 A264793 A264794 * A264796 A264797 A264798

Keyword

nonn

Author

R. H. Hardin, Nov 25 2015

Status

approved