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A012343 arctan(arcsin(x)*arcsin(x))=2/2!*x^2+8/4!*x^4-112/6!*x^6-8832/8!*x^8... 0
2, 8, -112, -8832, -27648, 71731200, 8459581440, -999488716800, -609228538183680, -30947990077440000, 82287312014325841920, 35793618716907672698880, -9141042424973375790120960 (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[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 (patrick.demichel(AT)hp.com)

STATUS

approved

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Last modified November 26 21:15 EST 2022. Contains 358362 sequences. (Running on oeis4.)