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A009295
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Expansion of e.g.f.: exp(x)/cosh(sin(x)).
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1
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1, 1, 0, -2, 4, 36, -56, -944, 2192, 45136, -128448, -3263072, 11141824, 334656960, -1332816512, -46199442176, 210250492160, 8260388524288, -42290401757184, -1857027989588480, 10563624419906560, 512693973356712960
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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=30}, CoefficientList[Series[Exp[x]/Cosh[Sin[x]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Jul 31 2013 *)
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CROSSREFS
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KEYWORD
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sign,easy
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AUTHOR
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EXTENSIONS
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Prior Mathematica program replaced and definition clarified by Harvey P. Dale, Jul 31 2013
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STATUS
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approved
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