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A012768
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exp(cosh(x)*arctan(x))=1+x+1/2!*x^2+2/3!*x^3+5/4!*x^4+20/5!*x^5...
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0
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1, 1, 1, 2, 5, 20, 85, 16, -887, 14096, 145865, -887456, -14963507, 126998976, 2554796829, -21834514688, -556819358703, 5067177011456, 157094249035537, -1485621376751104, -55286734778859115
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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[Exp[Cosh[x]ArcTan[x]], {x, 0, nn}], x]Range[0, nn]!] (* Harvey P. Dale, Oct 07 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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