A265881 Number of nX4 arrays of permutations of 4 copies of 0..n-1 with no element plus any horizontal neighbor equal to n-1.

0, 2, 894, 1584088, 10856237680, 105870775847760, 2630918094778547280, 87716669699961619793280

Offset

1,2

Comments

Column 4 of A265882.

Links

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

Example

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

Crossrefs

Cf. A265882.

Sequence in context: A159705 A229678 A261528 * A203609 A265617 A324597

Adjacent sequences: A265878 A265879 A265880 * A265882 A265883 A265884

Keyword

nonn

Author

R. H. Hardin, Dec 17 2015

Status

approved