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Search: id:A012236
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A012236 tanh(arctan(atanh(x)))=x-2/3!*x^3+24/5!*x^5-496/7!*x^7+24192/9!*x^9... +0
1
1, -2, 24, -496, 24192, -1246464, 150408192, -12132673536, 3380973895680, -253363927449600, 217523969745223680, 4682388187242823680, 35388810383588767825920, 8821171867345211810119680 (list; graph; listen)
OFFSET

0,2
CROSSREFS

Sequence in context: A003102 A052712 A133413 this_sequence A138450 A054946 A046744

Adjacent sequences: A012233 A012234 A012235 this_sequence A012237 A012238 A012239

KEYWORD

sign

AUTHOR

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

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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