A013408 - OEIS

A013408

arcsin(arcsin(x)-arctan(x))=3/3!*x^3-15/5!*x^5+945/7!*x^7-21735/9!*x^9...

3, -15, 945, -21735, 3898125, -200675475, 79558704225, -7377590595375, 5270866955479125, -797301690038728875, 870299379257314631625, -199012078053904775034375, 299398813508124256529728125

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,1

LINKS

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

MATHEMATICA

With[{nn=30}, Take[CoefficientList[Series[ArcSin[ArcSin[x]-ArcTan[x]], {x, 0, nn}], x] Range[0, nn-1]!, {4, -1, 2}]] (* Harvey P. Dale, Aug 04 2025 *)

CROSSREFS

Sequence in context: A293541 A207332 A013409 * A013412 A013410 A029521

Adjacent sequences: A013405 A013406 A013407 * A013409 A013410 A013411

KEYWORD

sign

AUTHOR

Patrick Demichel

STATUS

approved