A263640 Number of length n arrays of permutations of 0..n-1 with each element moved by -5 to 5 places and with no two consecutive increases.

1, 2, 5, 17, 70, 349, 1389, 4255, 13529, 42700, 141128, 479893, 1639260, 5542549, 18548087, 62017274, 207179998, 694864003, 2330691027, 7821792735, 26241990473, 87992594947, 295032591603, 989183937210, 3317043061446, 11123439095051

Offset

1,2

Comments

Column 5 of A263643.

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

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

Crossrefs

Cf. A263643.

Sequence in context: A263639 A263679 A251177 * A263680 A263641 A263681

Adjacent sequences: A263637 A263638 A263639 * A263641 A263642 A263643

Keyword

nonn

Author

R. H. Hardin, Oct 22 2015

Status

approved