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A009239
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Expansion of e.g.f.: exp(tan(sinh(x))).
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3
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1, 1, 1, 4, 13, 68, 373, 2528, 19097, 160400, 1522409, 15384128, 174263717, 2066458176, 27072485469, 369136141824, 5477315064625, 84457146691840, 1398343023229393, 24053254928131072, 439386703590146365
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OFFSET
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0,4
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LINKS
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MATHEMATICA
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With[{nn=20}, CoefficientList[Series[Exp[Tan[Sinh[x]]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Jun 04 2018 *)
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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EXTENSIONS
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Definition clarified and prior Mathematica program replaced by Harvey P. Dale, Jun 04 2018
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STATUS
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approved
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