A263904 Number of length n arrays of permutations of 0..n-1 with each element moved by -7 to 7 places and the total absolute value of displacements not greater than 2*(n-1).

1, 2, 6, 20, 76, 300, 1252, 5324, 22869, 98497, 426139, 1850782, 8067832, 35280090, 154696678, 679891308, 2994160190, 13209317445, 58367173629, 258266895944, 1144247729578, 5075406674186, 22535970467972, 100160698537196

Offset

1,2

Comments

Column 7 of A263905.

Links

R. H. Hardin, Table of n, a(n) for n = 1..38

Example

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

Crossrefs

Cf. A263905.

Sequence in context: A263902 A150172 A263903 * A263898 A000898 A213225

Adjacent sequences: A263901 A263902 A263903 * A263905 A263906 A263907

Keyword

nonn

Author

R. H. Hardin, Oct 29 2015

Status

approved