A012067 cos(arcsin(arcsin(x)))=1-1/2!*x^2-7/4!*x^4-169/6!*x^6-8751/8!*x^8...

1, -1, -7, -169, -8751, -789681, -110381943, -22142611737, -6041067843807, -2153812782224097, -972958293249140583, -543350342541113761545, -367659108914973687690255, -296447255926407313341954705

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 A368839 A351154

Adjacent sequences: A012064 A012065 A012066 * A012068 A012069 A012070

Keyword

sign

Author

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

Status

approved