login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A032265 Number of ways to partition n labeled elements into pie slices of at least 2 elements allowing the pie to be turned over. 1
0, 1, 1, 4, 11, 41, 162, 925, 5945, 47017, 402788, 3895937, 40556595, 461544253, 5625446270, 73716523405, 1028179882589, 15257484239777, 239529471989352, 3971376169852777, 69288230115817655 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Table of n, a(n) for n=1..21.

C. G. Bower, Transforms (2)

FORMULA

"DIJ" (bracelet, indistinct, labeled) transform of 0, 1, 1, 1...

CROSSREFS

Sequence in context: A214239 A278989 A000296 * A260320 A151273 A149271

Adjacent sequences:  A032262 A032263 A032264 * A032266 A032267 A032268

KEYWORD

nonn

AUTHOR

Christian G. Bower

STATUS

approved

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

License Agreements, Terms of Use, Privacy Policy .

Last modified February 21 19:50 EST 2018. Contains 299423 sequences. (Running on oeis4.)