login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo

Thanks to everyone who made a donation during our annual appeal!
To see the list of donors, or make a donation, see the OEIS Foundation home page.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A009792 Expansion of tanh(sin(tan(x))). 0
1, -1, -7, -1, -271, -160865, -20526295, -2612566625, -428389803295, -92209986037569, -24470039135390631, -7682773321370869825, -2806605353653596949039, -1180130871205583579484833, -564761272710902075156873847 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..14.

MATHEMATICA

Tanh[ Sin[ Tan[ x ] ]] (* Odd Part *)

CROSSREFS

Sequence in context: A027538 A334394 A027478 * A103243 A027496 A056009

Adjacent sequences:  A009789 A009790 A009791 * A009793 A009794 A009795

KEYWORD

sign

AUTHOR

R. H. Hardin

EXTENSIONS

Extended with signs by Olivier Gérard, Mar 15 1997

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
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified January 19 00:03 EST 2021. Contains 340262 sequences. (Running on oeis4.)