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A009778
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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, 1, 0, 4, -5, -9, 196, -1280, 4509, 12565, -386144, 3804516, -19339385, -75459461, 3162527460, -41545303904, 276166431961, 1385435722185, -73547738586656, 1207721984518180, -9917136571683789, -60806773846655969
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OFFSET
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0,5
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LINKS
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MATHEMATICA
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With[{nn=30}, CoefficientList[Series[Tanh[Log[1+x]]*Exp[x], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Nov 26 2015 *)
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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 and prior Mathematica program replaced by Harvey P. Dale, Nov 26 2015
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STATUS
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approved
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