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A009805
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Expansion of sin(tan(x)*sin(x))/2.
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0
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OFFSET
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0,2
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LINKS
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MATHEMATICA
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Tanh[ Sinh[ x ]*Sin[ x ] ]/2 (* [ x^(4n+2) ] *)
With[{nn=34}, Take[CoefficientList[Series[Tanh[Sinh[x]Sin[x]]/2, {x, 0, nn}], x] Range[0, nn]!, {3, -1, 4}]] (* Harvey P. Dale, May 28 2019 *)
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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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