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A009460
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Expansion of e.g.f.: sin(log(1+x))/cosh(x).
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0
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0, 1, -1, -2, 6, 5, 15, -772, 5348, -28579, 304875, -4039686, 44824626, -502746231, 6786025155, -100850039760, 1517589587400, -23931346331175, 408793231839735, -7414418761808394, 140090661066968990, -2772125867840390355
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OFFSET
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0,4
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LINKS
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MATHEMATICA
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CoefficientList[Series[Sech[x]*Sin[Log[1 + x]], {x, 0, 20}], x] * Range[0, 20]! (* Vaclav Kotesovec, Jan 24 2015 *)
With[{nn=30}, CoefficientList[Series[Sin[Log[1+x]]/Cosh[x], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Dec 26 2019 *)
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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 26 2019
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STATUS
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approved
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