A012116 sinh(arcsin(arcsinh(x)))=x+1/3!*x^3+9/5!*x^5+113/7!*x^7+6993/9!*x^9...

1, 1, 9, 113, 6993, 171777, 45264153, 412458993, 1241225427105, -81335384742015, 102955176831541545, -22142143528417205775, 20775502075935299781105, -8945394343172069982368895

Offset

0,3

Links

Table of n, a(n) for n=0..13.

Mathematica

With[{nn=30}, Take[CoefficientList[Series[Sinh[ArcSin[ArcSinh[x]]], {x, 0, nn}], x]Range[0, nn-1]!, {2, -1, 2}]] (* Harvey P. Dale, Mar 27 2012 *)

Crossrefs

Sequence in context: A165224 A342296 A243676 * A362576 A356240 A157551

Adjacent sequences: A012113 A012114 A012115 * A012117 A012118 A012119

Keyword

sign

Author

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

Status

approved