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A012424
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cos(arctan(x)*sin(x))=1-12/4!*x^4+360/6!*x^6-14000/8!*x^8...
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0
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1, 0, -12, 360, -14000, 826560, -74707776, 9918004096, -1826276458240, 443565659817984, -136830226103770112, 52123659256392435712, -23992831220659002945536, 13113491065080505366691840
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OFFSET
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0,3
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LINKS
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MATHEMATICA
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With[{nn=30}, Take[CoefficientList[Series[Cos[ArcTan[x]Sin[x]], {x, 0, nn}], x] Range[0, nn]!, {1, -1, 2}]] (* Harvey P. Dale, May 24 2015 *)
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CROSSREFS
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KEYWORD
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sign
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AUTHOR
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Patrick Demichel (patrick.demichel(AT)hp.com)
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STATUS
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approved
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