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A009181
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Expansion of cosh(x)/cos(sin(x)).
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0
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1, 2, 8, 8, -960, -22400, 251008, 53882624, 2088660992, -173107810304, -34807275798528, -1238452597522432, 561542864118906880, 119928087297015742464, -1488492672130035744768, -6684251211519983379283968, -1421114720526402152671739904
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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=40}, Take[CoefficientList[Series[Cosh[x]/Cos[Sin[x]], {x, 0, nn}], x] Range[0, nn]!, {1, -1, 2}]] (* Harvey P. Dale, May 01 2015 *)
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CROSSREFS
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KEYWORD
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sign
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AUTHOR
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EXTENSIONS
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More terms from and prior Mathematica program replaced by Harvey P. Dale, May 01 2015
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STATUS
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approved
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