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A012067 cos(arcsin(arcsin(x)))=1-1/2!*x^2-7/4!*x^4-169/6!*x^6-8751/8!*x^8... 0
1, -1, -7, -169, -8751, -789681, -110381943, -22142611737, -6041067843807, -2153812782224097, -972958293249140583, -543350342541113761545, -367659108914973687690255, -296447255926407313341954705 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..13.

MATHEMATICA

With[{nn=30}, Take[CoefficientList[Series[Cos[ArcSin[ArcSin[x]]], {x, 0, nn}], x] Range[0, nn]!, {1, -1, 2}]] (* Harvey P. Dale, Aug 21 2020 *)

CROSSREFS

Sequence in context: A086373 A162131 A258299 * A012145 A005019 A172027

Adjacent sequences:  A012064 A012065 A012066 * A012068 A012069 A012070

KEYWORD

sign

AUTHOR

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

STATUS

approved

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Last modified December 6 11:48 EST 2021. Contains 349563 sequences. (Running on oeis4.)