A013409 tan(arcsin(x)-arctan(x))=3/3!*x^3-15/5!*x^5+945/7!*x^7-14175/9!*x^9...

3, -15, 945, -14175, 3274425, -30405375, 52996568625, 2290345682625, 2793516176075625, 471064785877310625, 385249723016564030625, 141236453715527936390625, 117605025896710529818265625

Offset

0,1

Links

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

Mathematica

With[{nn=30}, Take[CoefficientList[Series[Tan[ArcSin[x]-ArcTan[x]], {x, 0, nn}], x] Range[0, nn-1]!, {4, -1, 2}]] (* Harvey P. Dale, Jul 25 2019 *)

Crossrefs

Sequence in context: A219122 A293541 A207332 * A013408 A013412 A013410

Adjacent sequences: A013406 A013407 A013408 * A013410 A013411 A013412

Keyword

sign

Author

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

Status

approved