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A013107
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arctan(arcsinh(x)+arctan(x))=2*x-19/3!*x^3+1041/5!*x^5-141489/7!*x^7...
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0
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2, -19, 1041, -141489, 35842401, -14587836921, 8707393003617, -7166002987401489, 7776862795242656577, -10760731866324884664297, 18490186709158886988610113, -38627726709262739118225523137
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OFFSET
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0,1
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LINKS
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MATHEMATICA
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With[{nn=30}, Take[CoefficientList[Series[ArcTan[ArcSinh[x]+ArcTan[x]], {x, 0, nn}], x] Range[0, nn-1]!, {2, -1, 2}]] (* Ray Chandler, Nov 29 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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