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A012968
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arctanh(arctan(x)+log(x+1))=2*x-1/2!*x^2+16/3!*x^3-54/4!*x^4+876/5!*x^5...
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0
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0, 2, -1, 16, -54, 876, -6630, 122904, -1558536, 33455520, -601095600, 14941817856, -346714064928, 9916498091808, -280431880000272, 9142107223322304, -303483440198252160, 11161636493381966592
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history;
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internal format)
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OFFSET
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0,2
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LINKS
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MATHEMATICA
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With[{nn=30}, CoefficientList[Series[ArcTanh[ArcTan[x]+Log[x+1]], {x, 0, nn}], x] Range[0, nn]!] (* Ray Chandler, Nov 28 2016 *)
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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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