A264729 Number of 2Xn arrays of permutations of 0..n*2-1 with rows nondecreasing modulo 4 and columns nondecreasing modulo 6.

1, 2, 4, 22, 154, 931, 14160, 195952, 2808960, 58924800, 1585406976, 38032879616, 1491624640512, 52205681184768, 2118556421369856

Offset

1,2

Comments

Row 2 of A264728.

Links

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

Example

Some solutions for n=6
..0..4..8..6..2.10....8..0..6..2.10..7....0..4..8..1..9..5....0..6..2..7.11..3
..1..5..9..7..3.11....4..9..1..5.11..3....6.10..2..7..3.11....4..8..9..1..5.10

Crossrefs

Cf. A264728.

Sequence in context: A259116 A283322 A019025 * A339781 A377358 A192332

Adjacent sequences: A264726 A264727 A264728 * A264730 A264731 A264732

Keyword

nonn

Author

R. H. Hardin, Nov 22 2015

Status

approved