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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, -3, -75, 1337, 144105, 3933237, 118760733, 129911988593, 47180864336337, 13805291952312685, 5130037600431416453, 2642764719782227835049, 1617152674535806453668025
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OFFSET
0,3
LINKS
Table of n, a(n) for n=0..13.
CROSSREFS
Sequence in context:
A125520
A163131
A060869
*
A136328
A003690
A230143
Adjacent sequences:
A012488
A012489
A012490
*
A012492
A012493
A012494
KEYWORD
sign
AUTHOR
Patrick Demichel (patrick.demichel(AT)hp.com)
STATUS
approved
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Last modified July 28 15:17 EDT 2024. Contains 374698 sequences. (Running on oeis4.)