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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A009503 Expansion of sin(tan(tanh(x))). 0
1, -1, -7, 279, -5167, -150833, 27945609, -1993449433, -9028140255, 31838140005407, -6048738288194407, 355913167525925303, 184225833048174255601, -80356934978109379169297, 12759566239212806636543529 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

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

MATHEMATICA

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

CROSSREFS

Sequence in context: A289634 A065581 A062646 * A209889 A176072 A096548

Adjacent sequences:  A009500 A009501 A009502 * A009504 A009505 A009506

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 February 24 22:04 EST 2020. Contains 332216 sequences. (Running on oeis4.)