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A009788
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Expansion of e.g.f.: tanh(log(1+x)/exp(x)).
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0
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0, 1, -3, 6, 12, -325, 3275, -21238, 2128, 2873229, -59980543, 767451894, -4032383300, -119489497257, 4880007568319, -104393287284518, 1240478290057792, 10284007879438201, -1108679036024621403, 37101253954089817798
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OFFSET
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0,3
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LINKS
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MATHEMATICA
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With[{nn=20}, CoefficientList[Series[Tanh[Log[1+x]/Exp[x]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Sep 27 2014 *)
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CROSSREFS
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KEYWORD
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sign,easy
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AUTHOR
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EXTENSIONS
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Definition clarified by and prior Mathematica program replaced by Harvey P. Dale, Sep 27 2014
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STATUS
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approved
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