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A009716
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Expansion of e.g.f. tan(tanh(x))*exp(x).
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1
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0, 1, 2, 3, 4, -3, -42, -49, 456, 2905, 10154, -83589, -1263668, -334059, 74121726, 351159815, -1582556016, -39776495567, -396499390126, 2339943411315, 87145255604884, 181395497796525, -10528569148387290, -87834301596283969
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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=30}, CoefficientList[Series[Tan[Tanh[x]]Exp[x], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Jul 27 2013 *)
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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 Mathematica program replaced by Harvey P. Dale, Jul 27 2013
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STATUS
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approved
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