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A012999 arcsin(arctan(x)+tan(x))=2*x+8/3!*x^3+328/5!*x^5+31712/7!*x^7... 0
2, 8, 328, 31712, 6354304, 2085514752, 1027652193280, 707087567055872, 648127370395910144, 763186372089893650432, 1122739235799995992047616, 2017897729638659884887834624, 4350781970507936954099174998016 (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[ArcTan[x]+Tan[x]], {x, 0, nn}], x] Range[0, nn-1]!, {2, -1, 2}]] (* Harvey P. Dale, Jan 03 2022 *)

CROSSREFS

Sequence in context: A012541 A054943 A013135 * A013003 A009707 A013176

Adjacent sequences:  A012996 A012997 A012998 * A013000 A013001 A013002

KEYWORD

nonn,changed

AUTHOR

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

STATUS

approved

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Last modified January 16 05:22 EST 2022. Contains 350374 sequences. (Running on oeis4.)