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 A013828 a(n) = 3^(5*n + 3). 1
 27, 6561, 1594323, 387420489, 94143178827, 22876792454961, 5559060566555523, 1350851717672992089, 328256967394537077627, 79766443076872509863361, 19383245667680019896796723, 4710128697246244834921603689 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 LINKS Vincenzo Librandi, Table of n, a(n) for n = 0..200 Tanya Khovanova, Recursive Sequences Index entries for linear recurrences with constant coefficients, signature (243). FORMULA From Philippe Deléham, Nov 30 2008: (Start) a(n) = 243*a(n-1), n > 0; a(0)=27. G.f.: 27/(1-243*x). a(n) = 3*A013827(n) = 9*A013826(n) = A013829(n)/3. (End) MATHEMATICA 3^(5*Range[0, 20]+3) (* or *) NestList[243#&, 27, 20] (* Harvey P. Dale, Jun 07 2016 *) PROG (MAGMA) [3^(5*n+3): n in [0..15]]; // Vincenzo Librandi, Jul 07 2011 CROSSREFS Cf. A000244 (3^n), A016885 (5*n+3). Sequence in context: A211928 A123395 A051680 * A209261 A001321 A263601 Adjacent sequences:  A013825 A013826 A013827 * A013829 A013830 A013831 KEYWORD nonn,easy AUTHOR STATUS approved

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Last modified November 21 00:36 EST 2018. Contains 317427 sequences. (Running on oeis4.)