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Search: id:A009434
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A009434 Expansion of ln(1+x)/cosh(tanh(x)). +0
1
0, 1, -1, -1, 0, 69, -225, -1653, 3976, 187401, -965385, -14516745, 61266744, 3032650893, -21187300953, -491788726653, 2947006495920, 166337505847057, -1463633608132017, -46261934493321105, 358635306874354320 (list; graph; listen)
OFFSET

0,6

MATHEMATICA

Log[ 1+x ]/Cosh[ Tanh[ x ] ]

CROSSREFS

Sequence in context: A044782 A020296 A153672 this_sequence A115920 A158732 A069216

Adjacent sequences: A009431 A009432 A009433 this_sequence A009435 A009436 A009437

KEYWORD

sign,easy

AUTHOR

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

EXTENSIONS

Extended with signs Mar 15 1997 by Olivier Gerard.

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Last modified December 9 18:50 EST 2009. Contains 170568 sequences.


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