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A012982
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cosh(arctan(x)+sin(x))=1+4/2!*x^2-8/4!*x^4-26/6!*x^6+424/8!*x^8...
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1
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1, 4, -8, -26, 424, 4314, 1175508, -586563610, 202456213808, -74723085885198, 31720351727685548, -15704109567909173154, 9057266333254873075336, -6050602176713431738303574, 4648623295941041403621558724
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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}, Take[CoefficientList[Series[Cosh[ArcTan[x]+Sin[x]], {x, 0, nn}], x]Range[0, nn]!, {1, -1, 2}]] (* Harvey P. Dale, Nov 16 2011 *)
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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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