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Search: id:A012679
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A012679 tan(tanh(x)*arctan(x))=2/2!*x^2-16/4!*x^4+560/6!*x^6-39296/8!*x^8... +0
1
2, -16, 560, -39296, 4526848, -774871040, 184332195840, -58099536592896, 23416511012143104, -11741974762852974592, 7167152797622391013376, -5231209742433608374681600, 4498538959739976198689652736 (list; graph; listen)
OFFSET

0,1
CROSSREFS

Sequence in context: A121271 A013136 A013004 this_sequence A012726 A013177 A060279

Adjacent sequences: A012676 A012677 A012678 this_sequence A012680 A012681 A012682

KEYWORD

sign

AUTHOR

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

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.

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