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

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A225969 Number of permutations of [n] having exactly 8 strong fixed blocks. 2
1, 29, 493, 6484, 73713, 768931, 7641778, 74285193, 720732077, 7097087844, 71988257273, 762506830931, 8539944840752, 102230338451871, 1318698786618219, 18414090830686692, 278579895011969895, 4555101560023980405, 80136465741614450118, 1508615434533451340535 (list; graph; refs; listen; history; text; internal format)
OFFSET
22,2
COMMENTS
See A186373 for the definition of strong fixed blocks.
LINKS
FORMULA
a(n) ~ 7 * n! / n^20. - Vaclav Kotesovec, Aug 29 2014
CROSSREFS
Column k=8 of A186373.
Sequence in context: A320550 A211833 A022753 * A211560 A333064 A228217
KEYWORD
nonn
AUTHOR
Alois P. Heinz, May 22 2013
STATUS
approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 15 17:56 EDT 2024. Contains 371693 sequences. (Running on oeis4.)