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A002980
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E.g.f: 1/(1 - sin(x) + sin(x)^2 - sin(x)^3).
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0
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1, 1, 0, -1, 24, 121, -480, -4201, 48384, 478801, -4968960, -62871601, 885586944, 12996863881, -203910819840, -3476839930201, 63397697224704, 1221998040867361, -24917358603141120, -537278342731116001
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OFFSET
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0,5
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LINKS
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EXAMPLE
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1/(1 - sin(x) + sin(x)^2 - sin(x)^3) = 1 + x - (1/6)*x^3 + x^4 + (121/120)*x^5 - (2/3)*x^6 - (4201/5040)*x^7 + (6/5)*x^8 + (478801/362880)*x^9 - (1294/945)*x^10 - ...
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MATHEMATICA
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With[{nn=20}, CoefficientList[Series[1/(1-Sin[x]+Sin[x]^2-Sin[x]^3), {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Nov 28 2014 *)
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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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STATUS
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approved
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