A263903 Number of length n arrays of permutations of 0..n-1 with each element moved by -6 to 6 places and the total absolute value of displacements not greater than 2*(n-1).

1, 2, 6, 20, 76, 300, 1252, 5197, 21735, 91151, 384641, 1629124, 6927800, 29539650, 126281489, 540980783, 2321907944, 9982050981, 42977082052, 185279158666, 799716576405, 3455546697332, 14946086528673, 64704061451845

Offset

1,2

Comments

Column 6 of A263905.

Links

R. H. Hardin, Table of n, a(n) for n = 1..55

Example

Some solutions for n=7
..4....0....4....3....3....2....0....1....1....1....0....1....0....6....1....3
..1....3....1....0....1....4....4....4....0....0....1....5....1....0....0....2
..2....5....3....2....2....0....3....0....4....3....4....2....3....1....2....0
..3....2....2....6....0....3....2....3....3....2....6....3....2....2....5....1
..6....1....0....4....5....5....6....2....6....4....3....0....4....4....3....5
..5....4....5....5....6....1....1....6....5....5....5....6....6....5....6....4
..0....6....6....1....4....6....5....5....2....6....2....4....5....3....4....6

Crossrefs

Cf. A263905.

Sequence in context: A150171 A263902 A150172 * A263904 A263898 A000898

Adjacent sequences: A263900 A263901 A263902 * A263904 A263905 A263906

Keyword

nonn

Author

R. H. Hardin, Oct 29 2015

Status

approved