A264864 Number of 3Xn arrays of permutations of 0..n*3-1 with rows nondecreasing modulo 6 and columns nondecreasing modulo 7.

1, 5, 30, 839, 16365, 550479, 8299492, 275881482

Offset

1,2

Comments

Row 3 of A264862.

Links

Table of n, a(n) for n=1..8.

Example

Some solutions for n=4
..7..8..9.11....0..7..2..8....0..8..9.10....0..1..7..8....7..1..9.10
..0..1..3..4....1..9..3..4....7..1..2..3....2..3..9.10....0..8..2..4
..6..2.10..5....6.10.11..5....6..4..5.11....6..4.11..5....6..3..5.11

Crossrefs

Cf. A264862.

Sequence in context: A058783 A203769 A264861 * A297472 A299129 A255677

Adjacent sequences: A264861 A264862 A264863 * A264865 A264866 A264867

Keyword

nonn

Author

R. H. Hardin, Nov 26 2015

Status

approved