A012954 arcsinh(tan(x)+arcsin(x))=2*x-5/3!*x^3+193/5!*x^5-16543/7!*x^7...

2, -5, 193, -16543, 2878153, -818673803, 348172234837, -206572325773903, 163130348972145393, -165417368904178869075, 209489646598962151351501, -324053551878860145326926775, 601237252095423311815599678441

Offset

0,1

Links

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

Mathematica

With[{nn=30}, Take[CoefficientList[Series[ArcSinh[Tan[x]+ArcSin[x]], {x, 0, nn}], x] Range[0, nn-1]!, {2, -1, 2}]] (* Harvey P. Dale, Oct 01 2024 *)

Crossrefs

Sequence in context: A100366 A339313 A012975 * A006271 A013105 A208210

Adjacent sequences: A012951 A012952 A012953 * A012955 A012956 A012957

Keyword

sign

Author

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

Status

approved