A225970 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A225970

Number of permutations of [n] having exactly 9 strong fixed blocks.

2

1, 33, 627, 9073, 111870, 1248766, 13110889, 132972135, 1329550237, 13327791693, 135953350084, 1431074091372, 15754008527799, 183668908342603, 2292564722628641, 30882981325870191, 450836857113720902, 7132752605955632598, 121911367111794972727

(list; graph; refs; listen; history; text; internal format)

OFFSET

25,2

COMMENTS

See A186373 for the definition of strong fixed blocks.

LINKS

Alois P. Heinz, Table of n, a(n) for n = 25..470

FORMULA

a(n) ~ 8 * n! / n^23. - Vaclav Kotesovec, Aug 29 2014

CROSSREFS

Column k=9 of A186373.

Sequence in context: A076684 A181382 A252926 * A004328 A235894 A261486

Adjacent sequences: A225967 A225968 A225969 * A225971 A225972 A225973

KEYWORD

nonn

AUTHOR

Alois P. Heinz, May 22 2013

STATUS

approved