A225970 Number of permutations of [n] having exactly 9 strong fixed blocks.

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

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