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Search: id:A012491
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A012491 sec(cos(x)*arcsin(x))=1+1/2!*x^2-3/4!*x^4-75/6!*x^6+1337/8!*x^8... +0
1
1, 1, -3, -75, 1337, 144105, 3933237, 118760733, 129911988593, 47180864336337, 13805291952312685, 5130037600431416453, 2642764719782227835049, 1617152674535806453668025 (list; graph; listen)
OFFSET

0,3

CROSSREFS

Sequence in context: A125520 A163131 A060869 this_sequence A136328 A003690 A034940

Adjacent sequences: A012488 A012489 A012490 this_sequence A012492 A012493 A012494

KEYWORD

sign

AUTHOR

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

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Last modified December 20 16:54 EST 2009. Contains 171081 sequences.


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