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Search: id:A012219
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A012219 arctanh(atan(arcsinh(x)))=x-1/3!*x^3+17/5!*x^5-617/7!*x^7+44417/9!*x^9... +0
1
1, -1, 17, -617, 44417, -5210129, 909126033, -220910314809, 71341157623169, -29556627270426145, 15282372258542389905, -9645984260739983339273, 7298836347461102485422593, -6521512480584315170326457393 (list; graph; listen)
OFFSET

0,3
CROSSREFS

Sequence in context: A009709 A094133 A142744 this_sequence A063941 A089018 A118769

Adjacent sequences: A012216 A012217 A012218 this_sequence A012220 A012221 A012222

KEYWORD

sign

AUTHOR

Patrick Demichel (dml(AT)hpfrcu03.france.hp.com)

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Last modified September 6 16:04 EDT 2008. Contains 143483 sequences.

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