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!)
A009677 Expansion of e.g.f. tan(sinh(sin(x))), odd powers only. 1
1, 2, 8, -8, -4096, -184064, -6462336, 141778176, 56652931072, 7990288265216, 604515399630848, -52091469346013184, -36361552578811101184, -9602033551463759937536, -1234912222481784889933824 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..100

MATHEMATICA

With[{nn=30}, Take[CoefficientList[Series[Tan[Sinh[Sin[x]]], {x, 0, nn}], x] Range[0, nn-1]!, {2, -1, 2}]] (* Harvey P. Dale, Aug 06 2013 *)

CROSSREFS

Sequence in context: A012346 A012649 A009627 * A318605 A021350 A016641

Adjacent sequences:  A009674 A009675 A009676 * A009678 A009679 A009680

KEYWORD

sign

AUTHOR

R. H. Hardin

EXTENSIONS

Extended with signs by Olivier Gérard, Mar 15 1997

Previous Mathematica program replaced by Harvey P. Dale, Aug 06 2013

Clarified definition, Joerg Arndt, Feb 09 2014

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 March 28 07:59 EDT 2020. Contains 333079 sequences. (Running on oeis4.)