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A009829
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Expansion of e.g.f.: tanh(x)*exp(sinh(x)).
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0
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0, 1, 2, 1, 0, 21, 88, -27, -704, 6121, 50464, -153559, -2089216, 13064637, 173223040, -996722035, -16120801280, 114653539281, 2032098365952, -15657589156655, -311227464130560, 2678537704263781, 58380271774087168
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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[Tanh[x]*Exp[Sinh[x]], {x, 0, nn}], x] Range[ 0, nn]!] (* Harvey P. Dale, Dec 28 2021 *)
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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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Previous Mathematica program replaced and definition clarified by Harvey P. Dale, Dec 28 2021
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STATUS
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approved
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