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A009193
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Expansion of e.g.f.: exp(log(1+x)*cosh(x)).
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1
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1, 1, 0, 3, 6, -5, 135, -154, 1260, 6189, -33285, 470294, -2056758, 14299935, -3614611, -379101878, 10041282472, -121491285111, 1656259499511, -21619048472474, 338632378045750, -5874571029856693, 115201962050532137
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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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a(n) ~ (-1)^n * n! / (Gamma(-cosh(1)) * n^(1 + cosh(1))). - Vaclav Kotesovec, Jul 28 2018
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MATHEMATICA
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With[{nn=30}, CoefficientList[Series[Exp[Log[1+x]*Cosh[x]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Jun 21 2017 *)
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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, Jun 21 2017
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STATUS
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approved
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