A013403 arcsinh(arcsin(x)-tan(x))=-1/3!*x^3-7/5!*x^5-47/7!*x^7+3369/9!*x^9...

-1, -7, -47, 3369, 571573, 88260053, 16352313521, 3805010266353, 1114309660688557, 405568733333445837, 180263147441643275337, 96121395297143070311401, 60524878000846286453504453

Offset

0,2

Links

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

Mathematica

With[{nn=30}, Take[CoefficientList[Series[ArcSinh[ArcSin[x]-Tan[x]], {x, 0, nn}], x] Range[0, nn-1]!, {4, -1, 2}]] (* Harvey P. Dale, Jul 22 2019 *)

Crossrefs

Sequence in context: A201176 A013400 A013399 * A013401 A384449 A020465

Adjacent sequences: A013400 A013401 A013402 * A013404 A013405 A013406

Keyword

sign

Author

Patrick Demichel

Status

approved