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A009768 Expansion of tanh(exp(x)*x). 5
0, 1, 2, 1, -20, -159, -594, 2465, 69560, 665665, 1593850, -67177791, -1413216540, -12990964063, 64480265318, 4811655319393, 90259507840240, 540272971703937, -20890652777843598, -798235260367432831, -12766815370452348580 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..20.

MATHEMATICA

Tanh[ Exp[ x ]*x ]

CROSSREFS

Sequence in context: A012932 A013163 A191719 * A051492 A164827 A213976

Adjacent sequences:  A009765 A009766 A009767 * A009769 A009770 A009771

KEYWORD

sign,easy

AUTHOR

R. H. Hardin

EXTENSIONS

Extended with signs by Olivier Gérard, Mar 15 1997

STATUS

approved

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Last modified October 19 00:36 EDT 2018. Contains 316327 sequences. (Running on oeis4.)