Greetings from
The On-Line Encyclopedia of Integer Sequences
!
Hints
Search:
id:A067550
Displaying 1-1 of 1 results found.
page 1
Format:
long
| short |
internal
|
text
Sort: relevance |
references
|
number
Highlight: on |
off
A067550
(n-1)!(n+2)!/(3*2^n).
+0
4
1, 2, 10, 90, 1260, 25200, 680400, 23814000, 1047816000, 56582064000, 3677834160000, 283193230320000, 25487390728800000, 2650688635795200000, 315431947659628800000, 42583312934049888000000, 6472663565975582976000000
(
list
;
graph
;
listen
)
page 1
Search completed in 0.002 seconds
Lookup
|
Welcome
|
Find friends
|
Music
|
Plot 2
|
Demos
|
Index
|
Browse
|
More
|
WebCam
Contribute new seq. or comment
|
Format
|
Transforms
|
Puzzles
|
Hot
|
Classics
More pages
|
Superseeker
|
Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 5 08:23 EST 2009. Contains 170348 sequences.
AT&T Labs Research
Legal Notice
© 2009 AT&T Intellectual Property.
All Rights Reserved.
