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A012983
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sec(arctan(x)+sin(x))=1+4/2!*x^2+56/4!*x^4+1894/6!*x^6+117288/8!*x^8...
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0
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1, 4, 56, 1894, 117288, 11804634, 1728907572, 351044605734, 93615747164592, 31926736599252978, 13490290255530367052, 6942626443208363650846, 4262966686937642406398792, 3085748295626999896052048426
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OFFSET
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0,2
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LINKS
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MATHEMATICA
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With[{nn=30}, Take[CoefficientList[Series[Sec[ArcTan[x]+Sin[x]], {x, 0, nn}], x] Range[0, nn]!, {1, -1, 2}]] (* Harvey P. Dale, Feb 10 2019 *)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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Patrick Demichel (patrick.demichel(AT)hp.com)
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STATUS
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approved
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