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A013828
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a(n) = 3^(5*n + 3).
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1
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27, 6561, 1594323, 387420489, 94143178827, 22876792454961, 5559060566555523, 1350851717672992089, 328256967394537077627, 79766443076872509863361, 19383245667680019896796723, 4710128697246244834921603689
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OFFSET
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0,1
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LINKS
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FORMULA
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a(n) = 243*a(n-1), n > 0; a(0)=27.
G.f.: 27/(1-243*x).
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MATHEMATICA
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3^(5*Range[0, 20]+3) (* or *) NestList[243#&, 27, 20] (* Harvey P. Dale, Jun 07 2016 *)
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PROG
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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