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A012702
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Expansion of e.g.f.: cos(arctanh(x)*log(x+1))=1-12/4!*x^4+60/5!*x^5-570/6!*x^6+3780/7!*x^7...
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0
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1, 0, 0, 0, -12, 60, -570, 3780, -36288, 290304, -3077160, 27976080, -325364952, 3125330208, -38076353952, 320524495200, -3277240862208, -12892686066816, 851147013155904, -38579486635656576, 1000229709289596288
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OFFSET
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0,5
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LINKS
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MATHEMATICA
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With[{nn=20}, CoefficientList[Series[Cos[ArcTanh[x]Log[x+1]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Aug 11 2017 *)
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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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EXTENSIONS
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STATUS
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approved
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