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 A013826 a(n) = 3^(5*n + 1). 3
 3, 729, 177147, 43046721, 10460353203, 2541865828329, 617673396283947, 150094635296999121, 36472996377170786403, 8862938119652501095929, 2153693963075557766310747, 523347633027360537213511521 (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 26 2008: (Start) a(n) = 243*a(n-1); a(0)=3. G.f.: 3/(1-243*x). (End) MATHEMATICA NestList[243#&, 3, 20] (* Harvey P. Dale, Jan 26 2013 *) PROG (Magma) [3^(5*n+1): n in [0..15]]; // Vincenzo Librandi, Jul 07 2011 (Maxima) makelist(3^(5*n+1), n, 0, 20); /* Martin Ettl, Oct 21 2012 */ (PARI) a(n)=3^(5*n+1) \\ Charles R Greathouse IV, Jul 11 2016 CROSSREFS Sequence in context: A306961 A059120 A300947 * A255012 A133014 A100407 Adjacent sequences: A013823 A013824 A013825 * A013827 A013828 A013829 KEYWORD nonn,easy AUTHOR N. J. A. Sloane STATUS approved

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Last modified May 19 14:45 EDT 2024. Contains 372698 sequences. (Running on oeis4.)