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A012759
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Expansion of e.g.f.: arctan(cosh(x)*log(x+1))=x-1/2!*x^2+3/3!*x^3-57/5!*x^5+405/6!*x^6...
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0
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0, 1, -1, 3, 0, -57, 405, -1827, -4424, 223541, -2901285, 19263167, 121524216, -6372341445, 112206095729, -915357416711, -12418256340720, 674275623382473, -14438518400518281, 129951850481453275
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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[ArcTan[Cosh[x]Log[x+1]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Jan 06 2014 *)
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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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Definition clarified and zero prepended by Harvey P. Dale, Jan 06 2014
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STATUS
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approved
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