A012343 arctan(arcsin(x)*arcsin(x))=2/2!*x^2+8/4!*x^4-112/6!*x^6-8832/8!*x^8...

2, 8, -112, -8832, -27648, 71731200, 8459581440, -999488716800, -609228538183680, -30947990077440000, 82287312014325841920, 35793618716907672698880, -9141042424973375790120960

Offset

0,1

Links

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

Mathematica

With[{nn=30}, Take[CoefficientList[Series[ArcTan[ArcSin[x]^2], {x, 0, nn}], x] Range[0, nn]!, {3, -1, 2}]] (* Harvey P. Dale, Sep 16 2019 *)

Crossrefs

Sequence in context: A211938 A331405 A005787 * A012347 A263249 A297631

Adjacent sequences: A012340 A012341 A012342 * A012344 A012345 A012346

Keyword

sign

Author

Patrick Demichel

Status

approved