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A024279
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Expansion of tan(tan(x)*sinh(x))/2.
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0
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0, 1, 6, 191, 11676, 1111501, 159118146, 31534949291, 8253261002616, 2758076443359961, 1145356666834820286, 578481632054752663511, 349162848547458172567956, 248194708790049332718453541
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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[Tan[Tan[x]*Sinh[x]]/2, {x, 0, nn}], x] Range[0, nn]!, {1, -1, 2}]] (* Harvey P. Dale, Aug 12 2019 *)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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Extended and signs tested 03/97.
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STATUS
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approved
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