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A013554
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Numerator of [x^(2n+1)] in the Taylor expansion -tan(cot(x)-coth(x))= 2*x/3 +8*x^3/81 +556*x^5/25515 +496*x^7/98415 +717572*x^9/613814355 +...
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1
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2, 8, 556, 496, 717572, 52939408, 870202072, 964225030112, 657454597470988, 27485377040128048, 700808303776317525176, 1479866177061564649568, 1640650015131154843789016, 13376815891310731844679270304, 25395222315410089406698868631728
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OFFSET
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0,1
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LINKS
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MATHEMATICA
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Numerator[Take[CoefficientList[Series[- Tan[Cot[x] - Coth[x]], {x, 0, 35}], x], {2, -2, 2}]] * Vincenzo Librandi, Nov 12 2016 *)
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CROSSREFS
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KEYWORD
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nonn,frac
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AUTHOR
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Patrick Demichel (patrick.demichel(AT)hp.com)
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EXTENSIONS
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STATUS
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approved
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