A225966 Number of permutations of [n] having exactly 5 strong fixed blocks.

1, 17, 187, 1725, 14770, 123810, 1049683, 9201893, 84765839, 830632443, 8737884632, 99283914256, 1222304625766, 16308650537598, 235329993989098, 3658770788460622, 61010416134839892, 1085940325012439060, 20537758641146194266, 410995800089222969774

Offset

13,2

Comments

See A186373 for the definition of strong fixed blocks.

Links

Alois P. Heinz, Table of n, a(n) for n = 13..450

Formula

a(n) ~ 4 * n! / n^11. - Vaclav Kotesovec, Aug 29 2014

Crossrefs

Column k=5 of A186373.

Sequence in context: A199674 A369332 A022741 * A057614 A041548 A025931

Adjacent sequences: A225963 A225964 A225965 * A225967 A225968 A225969

Keyword

nonn

Author

Alois P. Heinz, May 22 2013

Status

approved