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A225966
Number of permutations of [n] having exactly 5 strong fixed blocks.
2
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
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
KEYWORD
nonn
AUTHOR
Alois P. Heinz, May 22 2013
STATUS
approved