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A012988
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arctan(arctan(x)+arcsin(x))=2*x-17/3!*x^3+881/5!*x^5-111919/7!*x^7...
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0
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2, -17, 881, -111919, 26533505, -10100912631, 5639610453681, -4341268802719599, 4406801928941004417, -5703476313460410444519, 9166802819086051420527153, -17912428427903720892882856479
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OFFSET
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0,1
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LINKS
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Table of n, a(n) for n=0..11.
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MATHEMATICA
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With[{nn=30}, Take[CoefficientList[Series[ArcTan[ArcTan[ x]+ ArcSin[x]], {x, 0, nn}], x]Range[0, nn-1]!, {2, -1, 2}]] (* Harvey P. Dale, Sep 30 2011 *)
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CROSSREFS
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Sequence in context: A012944 A013099 A013060 * A261535 A327020 A058233
Adjacent sequences: A012985 A012986 A012987 * A012989 A012990 A012991
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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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EXTENSIONS
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Definition corrected by Harvey P. Dale, Sep 30 2011
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STATUS
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approved
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