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Search: id:A012263
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A012263 exp(arctanh(atanh(x)))=1+x+1/2!*x^2+5/3!*x^3+17/4!*x^4+129/5!*x^5... +0
1
1, 1, 1, 5, 17, 129, 769, 7797, 66849, 848481, 9506241, 145041093, 2007271089, 35799178401, 589807203777, 12045448529397, 230194642564161, 5298881528389185, 115219444193968257, 2952169020073027845 (list; graph; listen)
OFFSET

0,4
CROSSREFS

Sequence in context: A012174 A012259 A113936 this_sequence A076448 A096310 A071057

Adjacent sequences: A012260 A012261 A012262 this_sequence A012264 A012265 A012266

KEYWORD

nonn

AUTHOR

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

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Last modified September 5 01:44 EDT 2008. Contains 143476 sequences.

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