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Search: id:A013465
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A013465 cos(arctan(x)-atanh(x))=1-160/6!*x^6-691200/10!*x^10+3942400/12!*x^12... +0
1
1, 0, 0, -160, 0, -691200, 3942400, -14125363200, 295206912000, -902471385088000, 43911376404480000, -140627264197754880000, 12856220870209699840000, -45500991975079280640000000 (list; graph; listen)
OFFSET

0,4
CROSSREFS

Sequence in context: A121804 A013454 A013455 this_sequence A013466 A060675 A127338

Adjacent sequences: A013462 A013463 A013464 this_sequence A013466 A013467 A013468

KEYWORD

sign

AUTHOR

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

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Last modified July 26 23:19 EDT 2008. Contains 142293 sequences.

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