A013486 arctan(cos(x)-sech(x))=-4/4!*x^4+60/6!*x^6-1384/8!*x^8+50520/10!*x^10...

-4, 60, -1384, 50520, -1963564, -2440620, 24774209456, -7410634833360, 1946918835205676, -504022869697607700, 125734569960701153096, -25506896972028634763640, -308739978510619283180284

Offset

0,1

Links

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

Crossrefs

Sequence in context: A208890 A370498 A325154 * A013483 A013484 A013485

Adjacent sequences: A013483 A013484 A013485 * A013487 A013488 A013489

Keyword

sign

Author

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

Status

approved