A266654 Number of nX4 arrays of permutations of 4 copies of 0..n-1 with no element 1 greater than its northeast neighbor modulo n and the upper left element equal to 0.

1, 3, 829, 1044230, 3801147519, 32355628895416, 552401151665874798, 17030692774688332735790

Offset

1,2

Comments

Column 4 of A266655.

Links

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

Example

Some solutions for n=3
..0..2..0..2....0..1..1..0....0..1..2..2....0..0..1..2....0..1..1..2
..1..0..1..2....1..0..2..0....0..1..2..1....0..0..1..2....0..0..2..2
..0..1..2..1....2..2..2..1....0..2..1..0....2..1..1..2....0..1..2..1

Crossrefs

Cf. A266655.

Sequence in context: A083250 A096086 A062658 * A332183 A000723 A020525

Adjacent sequences: A266651 A266652 A266653 * A266655 A266656 A266657

Keyword

nonn

Author

R. H. Hardin, Jan 02 2016

Status

approved