A012422 arcsin(arctan(x)*sin(x))=2/2!*x^2-12/4!*x^4+310/6!*x^6-17304/8!*x^8...

2, -12, 310, -17304, 1700458, -258909860, 56652535966, -16866155567408, 6564236008307922, -3237559423419911996, 1974150395798812732422, -1458519974560491245318344, 1283942399735883713487058746

Offset

0,1

Links

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

Mathematica

With[{nn=30}, Take[CoefficientList[Series[ArcSin[ArcTan[x]Sin[x]], {x, 0, nn}], x] Range[0, nn]!, {3, -1, 2}]] (* Harvey P. Dale, Feb 26 2022 *)

Crossrefs

Sequence in context: A012380 A012377 A012425 * A122767 A260321 A094047

Adjacent sequences: A012419 A012420 A012421 * A012423 A012424 A012425

Keyword

sign

Author

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

Status

approved