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A024298
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Expansion of log(1+tanh(x)*sin(x))/2.
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0
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0, 1, -12, 371, -23212, 2462221, -397812162, 91074108971, -28061144757112, 11197923936924121, -5618483731461136062, 3461958000431478483671, -2569952518351298130757012, 2262189462485360615989843621, -2329800142118914687262408707962
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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[Log[1+Tanh[x]*Sin[x]]/2, {x, 0, nn}], x] Range[0, nn]!, {1, -1, 2}]] (* Harvey P. Dale, Aug 30 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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Extended with signs Mar 1997
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STATUS
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approved
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