A264830 Number of nX3 arrays of permutations of 0..n*3-1 with rows nondecreasing modulo 4 and columns nondecreasing modulo 7.

1, 4, 33, 288, 5400, 165333, 4348623, 208444341

Offset

1,2

Comments

Column 3 of A264831.

Links

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

Example

Some solutions for n=4
..0.11..7....8..0..1....8..0..7....8..0..2....0..1..7....8..0..9....0..8..7
..8..4..1...10..7..3....9..1..3....1..7..3....8.10..2...11..7..3....4..1..9
..9..5..3....4..9.11....4..2.10....9..5.10....9.11..3....4..1.10....5..2..3
..2..6.10....5..2..6....5..6.11....4..6.11....4..5..6....5..2..6....6.10.11

Crossrefs

Cf. A264831.

Sequence in context: A257068 A246806 A202765 * A237872 A123780 A054371

Adjacent sequences: A264827 A264828 A264829 * A264831 A264832 A264833

Keyword

nonn

Author

R. H. Hardin, Nov 26 2015

Status

approved