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A013486 arctan(cos(x)-sech(x))=-4/4!*x^4+60/6!*x^6-1384/8!*x^8+50520/10!*x^10... 0
-4, 60, -1384, 50520, -1963564, -2440620, 24774209456, -7410634833360, 1946918835205676, -504022869697607700, 125734569960701153096, -25506896972028634763640, -308739978510619283180284 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..12.

CROSSREFS

Sequence in context: A181418 A208890 A325154 * A013483 A013484 A013485

Adjacent sequences:  A013483 A013484 A013485 * A013487 A013488 A013489

KEYWORD

sign

AUTHOR

Patrick Demichel (patrick.demichel(AT)hp.com)

STATUS

approved

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Last modified October 21 05:28 EDT 2021. Contains 348141 sequences. (Running on oeis4.)