login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A279203
Number of square permutations of 2n things modulo the operations of mirror image, complement, and inverse.
1
1, 1, 6, 81, 2774, 162945
(
list
;
graph
;
refs
;
listen
;
history
;
text
;
internal format
)
OFFSET
0,3
LINKS
Table of n, a(n) for n=0..5.
Samuele Giraudo, S. Vialette,
Unshuffling Permutations
, arXiv preprint arXiv:1601.05962 [cs.DS], 2016.
CROSSREFS
Cf.
A279200
,
A279201
,
A279202
.
Sequence in context:
A204264
A076282
A121790
*
A320993
A032491
A135624
Adjacent sequences:
A279200
A279201
A279202
*
A279204
A279205
A279206
KEYWORD
nonn
,
more
AUTHOR
N. J. A. Sloane
, Dec 15 2016
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 August 19 20:52 EDT 2024. Contains 375310 sequences. (Running on oeis4.)