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A009420
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Expansion of log(1+x)*exp(tanh(x)).
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9
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0, 1, 1, 2, -8, -11, -19, 846, -1896, -111, -228159, 2453010, -11353440, 173733429, -3565851587, 41759789358, -501111404080, 9579604130881, -176443305192159, 2870638703204994, -53275482352387864, 1134671091039714069
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OFFSET
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0,4
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LINKS
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FORMULA
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MATHEMATICA
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Log[ 1+x ]*Exp[ Tanh[ x ] ]
CoefficientList[Series[E^Tanh[x]*Log[1 + x], {x, 0, 20}], x] * Range[0, 20]! (* Vaclav Kotesovec, Jan 23 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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STATUS
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approved
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