A012434 arcsin(arctan(x)*arcsin(x))=2/2!*x^2-4/4!*x^4+278/6!*x^6-6984/8!*x^8...

2, -4, 278, -6984, 1148202, -99018060, 28635818430, -5588393370000, 2487224151815250, -886910985311966100, 563430775878809461350, -321709990033199535312600, 277763298278504193429092730

Offset

0,1

Links

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

Mathematica

With[{nn=30}, Take[CoefficientList[Series[ArcSin[ArcTan[x]ArcSin[x]], {x, 0, nn}], x] Range[0, nn]!, {3, -1, 2}]] (* Harvey P. Dale, May 04 2013 *)

Crossrefs

Sequence in context: A262413 A363039 A012437 * A012368 A009705 A012372

Adjacent sequences: A012431 A012432 A012433 * A012435 A012436 A012437

Keyword

sign

Author

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

Status

approved