A013048 arctan(sinh(x)+tan(x))=2*x-13/3!*x^3+545/5!*x^5-56943/7!*x^7...

2, -13, 545, -56943, 11117105, -3487836823, 1604931814265, -1018249076690703, 851905379176813025, -908738393030606172583, 1203783991693440890209385, -1938726869386079701650506463

Offset

0,1

Links

Table of n, a(n) for n=0..11.

Mathematica

With[{nn=30}, Take[CoefficientList[Series[ArcTan[Sinh[x]+Tan[x]], {x, 0, nn}], x] Range[0, nn-1]!, {2, -1, 2}]] (* Harvey P. Dale, Aug 02 2018 *)

Crossrefs

Sequence in context: A015183 A163262 A132570 * A342958 A012981 A154356

Adjacent sequences: A013045 A013046 A013047 * A013049 A013050 A013051

Keyword

sign

Author

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

Status

approved