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A009815
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tanh(tan(x)*sin(x))=2/2!*x^2+4/4!*x^4-178/6!*x^6-5336/8!*x^8...
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2
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0, 2, 4, -178, -5336, 121082, 24994924, 661822982, -273928948016, -42186434881678, 4278599785289044, 2873614390992176702, 193732299468570630904, -268774878028807800675478, -95724942960306213127796036
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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=30}, Take[CoefficientList[Series[Tanh[Tan[x]*Sin[x]], {x, 0, nn}], x] Range[0, nn]!, {1, -1, 2}]] (* Harvey P. Dale, Aug 16 2016 *)
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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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