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A009510
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Expansion of sin(tan(x))/cosh(x).
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0
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1, -2, 12, -464, 336, -838752, -11036608, -5128035072, -109537337088, -68456854604288, 1239349299477504, -1118496851419058176, 496293938871527395328, 82254029902844029313024, 110360677045459831814963200, 38125337574469492416381255680
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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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With[{nn=40}, Take[CoefficientList[Series[Sin[Tan[x]]/Cosh[x], {x, 0, nn}], x] Range[0, nn-1]!, {2, -1, 2}]] (* Harvey P. Dale, Jan 22 2017 *)
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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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More terms from and prior Mathematica program replaced by Harvey P. Dale, Jan 22 2017
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STATUS
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approved
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