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 A013757 a(n) = 15^(3*n + 2). 1
 225, 759375, 2562890625, 8649755859375, 29192926025390625, 98526125335693359375, 332525673007965087890625, 1122274146401882171630859375, 3787675244106352329254150390625, 12783403948858939111232757568359375 (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 (3375). FORMULA From Philippe Deléham, Dec 03 2008: (Start) a(n) = 3375*a(n-1); a(0)=225. G.f.: 225/(1-3375*x). (End) MATHEMATICA 15^(3Range[0, 20]+2) (* or *) NestList[3375#&, 225, 20] (* Harvey P. Dale, Oct 25 2011 *) PROG (MAGMA) [15^(3*n+2): n in [0..15]]; // Vincenzo Librandi, Jun 27 2011 (Maxima) makelist(15^(3*n+2), n, 0, 20); /* Martin Ettl, Oct 21 2012 */ (PARI) a(n)=15^(3*n+2) \\ Charles R Greathouse IV, Jul 10 2016 CROSSREFS Subsequence of A001024. Sequence in context: A109688 A195277 A319944 * A151653 A077729 A077737 Adjacent sequences:  A013754 A013755 A013756 * A013758 A013759 A013760 KEYWORD nonn,easy AUTHOR STATUS approved

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Last modified November 16 23:51 EST 2018. Contains 317275 sequences. (Running on oeis4.)