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A009604
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Expansion of e.g.f. sinh(tan(x))*cos(x), odd powers only.
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1
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1, 0, 12, 280, 11536, 703296, 59653440, 6715007104, 967972497664, 173764741920768, 37986612815698944, 9929613975171315712, 3056815269626584895488, 1094148286150918628229120
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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 = 50}, CoefficientList[Series[Sinh[Tan[x]]*Cos[x], {x, 0, nn}], x] Range[0, nn - 1]!][[2 ;; ;; 2]] (* G. C. Greubel, Jan 30 2018 *)
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PROG
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(PARI) x='x+O('x^50); v=Vec(serlaplace(sinh(tan(x))*cos(x))); vector((#v-1)\2 , n, v[2*n-1]) // G. C. Greubel, Jan 30 2018
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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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STATUS
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approved
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