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A012399
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arctan(arctan(x)*log(x+1))=2/2!*x^2-3/3!*x^3-10/5!*x^5-32/6!*x^6...
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0
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0, 0, 2, -3, 0, -10, -32, 1596, -10080, 27936, -19008, -4728240, 113762880, -1378522080, 12151639680, -24566643360, -3018767431680, 84947924490240, -1424022331422720, 18489594521756160, -42627235124920320
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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}, CoefficientList[Series[ArcTan[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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