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Search: id:A012442
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A012442 sec(arctan(x)*arcsin(x))=1+12/4!*x^4-120/6!*x^6+17808/8!*x^8... +0
1
1, 0, 12, -120, 17808, -962880, 219945792, -31053369984, 10719320103168, -2908608708409344, 1441051026777725952, -637493975166202091520, 433239709928964325478400, -282573293205848764594176000 (list; graph; listen)
OFFSET

0,3
CROSSREFS

Sequence in context: A012373 A012620 A012564 this_sequence A037097 A018204 A098297

Adjacent sequences: A012439 A012440 A012441 this_sequence A012443 A012444 A012445

KEYWORD

sign

AUTHOR

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

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Last modified July 26 13:41 EDT 2008. Contains 142293 sequences.

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