A013389 sin(sin(x)-arctanh(x))=-3/3!*x^3-23/5!*x^5-721/7!*x^7-32759/9!*x^9...

3, 23, 721, 32759, 2672461, 310461227, 49895013169, 10516703525327, 2811203923750741, 926105108276716115, 367211453075540071769, 171643737525955364628727, 92766252900694480314741821

Offset

0,1

Links

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

Mathematica

With[{nn=30}, Take[-CoefficientList[Series[Sin[Sin[x]-ArcTanh[x]], {x, 0, nn}], x] Range[0, nn-1]!, {4, -1, 2}]] (* Harvey P. Dale, Jan 01 2014 *)

Crossrefs

Sequence in context: A333739 A119669 A013391 * A013393 A013390 A144986

Adjacent sequences: A013386 A013387 A013388 * A013390 A013391 A013392

Keyword

nonn

Author

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

Status

approved