A012438 arcsinh(arctan(x)*arcsin(x))=2/2!*x^2-4/4!*x^4+38/6!*x^6-264/8!*x^8...

2, -4, 38, -264, 251082, -20187660, 3240768750, -246050691600, 164895642091410, -44832184763361300, 26301902902677945270, -6982668079815620764440, 6485203397909159496161370

Offset

0,1

Links

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

Mathematica

With[{nn=30}, Take[CoefficientList[Series[ArcSinh[ArcTan[x]ArcSin[x]], {x, 0, nn}], x]Range[0, nn]!, {3, -1, 2}]] (* Harvey P. Dale, Dec 11 2011 *)

Crossrefs

Sequence in context: A053745 A019275 A012433 * A009626 A009835 A362411

Adjacent sequences: A012435 A012436 A012437 * A012439 A012440 A012441

Keyword

sign

Author

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

Status

approved