A012624 arcsin(arcsinh(x)*arctan(x))=2/2!*x^2-12/4!*x^4+358/6!*x^6-19992/8!*x^8...

2, -12, 358, -19992, 2033802, -315229860, 70634865390, -21500632868400, 8568722761815570, -4328828352860125500, 2705283169021072846710, -2049095504528923919551560, 1849840972092365870411519130

Offset

0,1

Links

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

Mathematica

With[{nn=30}, Take[CoefficientList[Series[ArcSin[ArcSinh[x]ArcTan[x]], {x, 0, nn}], x] Range[0, nn]!, {3, -1, 2}]] (* Harvey P. Dale, Mar 20 2013 *)

Crossrefs

Sequence in context: A009398 A009698 A012724 * A335829 A061307 A061300

Adjacent sequences: A012621 A012622 A012623 * A012625 A012626 A012627

Keyword

sign

Author

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

Status

approved