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A013414
sec(arcsin(x)-arctan(x))=1+90/6!*x^6-2520/8!*x^8+368550/10!*x^10...
0
1, 0, 0, 90, -2520, 368550, -24324300, 6214858650, -725350626000, 318282066852750, -56464293738352500, 40214549353890161250, -9894502805503110795000, 10823754426851479957593750
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OFFSET
0,4
LINKS
Table of n, a(n) for n=0..13.
CROSSREFS
Sequence in context:
A013355
A013357
A013358
*
A013413
A013411
A013415
Adjacent sequences:
A013411
A013412
A013413
*
A013415
A013416
A013417
KEYWORD
sign
AUTHOR
Patrick Demichel (patrick.demichel(AT)hp.com)
STATUS
approved
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Last modified May 18 00:47 EDT 2024. Contains 372608 sequences. (Running on oeis4.)