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A012218
tanh(arctan(arcsinh(x)))=x-5/3!*x^3+129/5!*x^5-7741/7!*x^7...
0
1, -5, 129, -7741, 830529, -139115349, 33466193409, -10924199283981, 4643317555286145, -2490727724722757925, 1645111995753399461505, -1311624218654589461390685, 1241813393715548870981284545
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OFFSET
0,2
LINKS
Table of n, a(n) for n=0..12.
CROSSREFS
Sequence in context:
A277259
A230303
A094074
*
A012136
A012022
A012176
Adjacent sequences:
A012215
A012216
A012217
*
A012219
A012220
A012221
KEYWORD
sign
AUTHOR
Patrick Demichel (patrick.demichel(AT)hp.com)
STATUS
approved
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Last modified May 1 06:40 EDT 2024. Contains 372148 sequences. (Running on oeis4.)