login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A012032
sec(sin(sinh(x)))=1+1/2!*x^2+5/4!*x^4+13/6!*x^6-1303/8!*x^8...
0
1, 1, 5, 13, -1303, -97351, -5539667, -182565627, 23677748561, 8153921374705, 1571128609968341, 190412412110488701, -16146953133290647751, -22882305147029329939799
(
list
;
graph
;
refs
;
listen
;
history
;
text
;
internal format
)
OFFSET
0,3
LINKS
Table of n, a(n) for n=0..13.
CROSSREFS
Sequence in context:
A009157
A153374
A247789
*
A121228
A201260
A012173
Adjacent sequences:
A012029
A012030
A012031
*
A012033
A012034
A012035
KEYWORD
sign
AUTHOR
Patrick Demichel (patrick.demichel(AT)hp.com)
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 March 19 01:34 EDT 2024. Contains 370952 sequences. (Running on oeis4.)