login
This site is supported by donations to The OEIS Foundation.
Logo

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A009395 Expansion of ln(1+tanh(x).exp(x)). 0
0, 1, 1, -3, -2, 45, -74, -1113, 7288, 27465, -647894, 1393227, 59935228, -604628115, -4418438114, 143982353967, -381525392432, -30072901507695, 405576151229266, 4636550476777107, -187783513074129692, 514355533864732725 (list; graph; refs; listen; history; internal format)
OFFSET

0,4

MATHEMATICA

Log[ 1+Tanh[ x ]*Exp[ x ] ]

CROSSREFS

Sequence in context: A065085 A093398 A002680 * A093892 A104254 A190286

Adjacent sequences:  A009392 A009393 A009394 * A009396 A009397 A009398

KEYWORD

sign,easy

AUTHOR

R. H. Hardin (rhhardin(AT)att.net)

EXTENSIONS

Extended with signs Mar 15 1997 by Olivier Gerard.

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 17 17:35 EST 2012. Contains 206061 sequences.