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 A013752 a(n) = 13^(3*n + 1). 2
 13, 28561, 62748517, 137858491849, 302875106592253, 665416609183179841, 1461920290375446110677, 3211838877954855105157369, 7056410014866816666030739693 (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(2197). FORMULA From Philippe Deléham, Nov 30 2008: (Start) a(n) = 2197*a(n-1); a(0)=13. G.f.: 13/(1-2197*x). a(n) = A013753(n)/13. (End) PROG (MAGMA) [13^(3*n+1): n in [0..15]]; // Vincenzo Librandi, Jun 27 2011 (PARI) a(n)=13^(3*n+1) \\ Charles R Greathouse IV, Jun 27 2011 CROSSREFS Subsequence of A001022. Sequence in context: A123921 A145716 A124990 * A076811 A203691 A220981 Adjacent sequences:  A013749 A013750 A013751 * A013753 A013754 A013755 KEYWORD nonn,easy AUTHOR STATUS approved

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Last modified November 13 17:47 EST 2018. Contains 317149 sequences. (Running on oeis4.)