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A012417
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cosh(arctan(x)*exp(x))=1+1/2!*x^2+6/3!*x^3+17/4!*x^4+20/5!*x^5...
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0
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1, 0, 1, 6, 17, 20, 145, 2170, 8353, -41208, 12065, 8539278, 24846769, -999642020, -1683957327, 211007667650, 379515957057, -52699680395376, -66075776120255, 17106146184773014, 14435220017357137
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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[Cosh[ArcTan[x]Exp[x]], {x, 0, nn}], x]Range[0, nn]!] (* Harvey P. Dale, Dec 15 2012 *)
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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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