A012546 arcsin(sinh(x)*tan(x))=2/2!*x^2+12/4!*x^4+262/6!*x^6+13272/8!*x^8...

2, 12, 262, 13272, 1199882, 172207332, 35836412302, 10199550294192, 3802117533461522, 1797033345886449852, 1049846428673838251542, 742763896072793206770312, 625784289590468519088366362

Offset

0,1

Links

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

Mathematica

With[{nn=30}, Take[CoefficientList[Series[ArcSin[Sinh[x]Tan[x]], {x, 0, nn}], x]Range[0, nn]!, {3, -1, 2}]] (* Harvey P. Dale, Jan 28 2012 *)

Crossrefs

Sequence in context: A361749 A012549 A009610 * A193204 A289314 A091504

Adjacent sequences: A012543 A012544 A012545 * A012547 A012548 A012549

Keyword

nonn

Author

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

Status

approved