The OEIS mourns the passing of
Jim Simons
and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A089429
Number of cycles in range [
A014137
(n-1)..
A014138
(n-1)] of permutation
A082339
/
A082340
.
1
1, 1, 2, 4, 10, 26, 74, 218, 672, 2134, 6964, 23206, 78724, 271014, 944766, 3328872, 11838378, 42441326, 153236900, 556746772, 2034098988
(
list
;
graph
;
refs
;
listen
;
history
;
text
;
internal format
)
OFFSET
0,3
COMMENTS
The number of orbits to which the corresponding automorphism(s) partitions the set of
A000108
(n) binary trees with n internal nodes.
LINKS
Table of n, a(n) for n=0..20.
A. Karttunen,
C-program for computing the initial terms of this sequence
CROSSREFS
Sequence in context:
A230662
A351642
A206464
*
A049143
A089404
A006123
Adjacent sequences:
A089426
A089427
A089428
*
A089430
A089431
A089432
KEYWORD
nonn
AUTHOR
Antti Karttunen
, Nov 29 2003
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 May 14 00:47 EDT 2024. Contains 372528 sequences. (Running on oeis4.)