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A013482
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exp(cos(x)-sech(x))=1-4/4!*x^4+60/6!*x^6-824/8!*x^8+120/10!*x^10...
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0
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1, 0, -4, 60, -824, 120, 1331156, -151389420, 15474229936, -1609208740560, 165275248217516, -13317787644945300, -752763454703346104, 1012558531283275284360, -490748297800639153012924
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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=30}, Take[CoefficientList[Series[Exp[Cos[x]-Sech[x]], {x, 0, nn}], x] Range[0, nn]!, {1, -1, 2}]] (* Harvey P. Dale, Sep 21 2019 *)
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CROSSREFS
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KEYWORD
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sign
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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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