A013412 arcsinh(arcsin(x)-arctan(x))=3/3!*x^3-15/5!*x^5+945/7!*x^7-36855/9!*x^9...

3, -15, 945, -36855, 5145525, -541215675, 137450538225, -28334434503375, 11334312919054125, -3890960916187219875, 2248877246697095639625, -1162888838017333636584375, 916442062457996554007653125

Offset

0,1

Links

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

Mathematica

With[{nn=30}, Take[CoefficientList[Series[ArcSinh[ArcSin[x]-ArcTan[x]], {x, 0, nn}], x] Range[0, nn-1]!, {4, -1, 2}]] (* Harvey P. Dale, Apr 27 2016 *)

Crossrefs

Sequence in context: A207332 A013409 A013408 * A013410 A029521 A272353

Adjacent sequences: A013409 A013410 A013411 * A013413 A013414 A013415

Keyword

sign

Author

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

Status

approved