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A012134
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exp(arcsin(arctanh(x)))=1+x+1/2!*x^2+4/3!*x^3+13/4!*x^4+84/5!*x^5...
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1
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1, 1, 1, 4, 13, 84, 469, 4208, 33433, 386064, 3984681, 56523072, 718210725, 12121690944, 183013440765, 3589856932608, 62801454477105, 1406019035808000, 27970921286867025, 704535958463063040
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OFFSET
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0,4
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LINKS
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MATHEMATICA
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With[{nn=20}, CoefficientList[Series[Exp[ArcSin[ArcTanh[x]]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Oct 08 2011 *)
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CROSSREFS
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KEYWORD
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nonn
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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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