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A024239
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Expansion of tanh(tan(x)*sin(x))/2.
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1
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0, 1, 2, -89, -2668, 60541, 12497462, 330911491, -136964474008, -21093217440839, 2139299892644522, 1436807195496088351, 96866149734285315452, -134387439014403900337739, -47862471480153106563898018
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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}, Take[CoefficientList[Series[Tanh[Tan[x]*Sin[x]]/2, {x, 0, nn}], x] Range[0, nn]!, {1, -1, 2}]] (* Harvey P. Dale, Jun 05 2013 *)
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CROSSREFS
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KEYWORD
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sign
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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