login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A009803 Expansion of tanh(sinh(x))*exp(x). 0
0, 1, 2, 2, 0, -8, -32, 16, 640, 2304, 1024, -68352, -661504, -843776, 25305088, 221382656, 948699136, -9865887744, -216606572544, -888186732544, 10006005547008, 200433787207680, 2013855760777216, -8060855544971264 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,3
LINKS
MATHEMATICA
Tanh[ Sinh[ x ] ]*Exp[ x ]
CROSSREFS
Sequence in context: A248948 A364288 A009187 * A009615 A184011 A079194
KEYWORD
sign,easy
AUTHOR
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 | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified February 24 16:16 EST 2024. Contains 370307 sequences. (Running on oeis4.)