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 A013728 a(n) = 23^(2*n + 1). 4
 23, 12167, 6436343, 3404825447, 1801152661463, 952809757913927, 504036361936467383, 266635235464391245607, 141050039560662968926103, 74615470927590710561908487, 39471584120695485887249589623 (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 (529). FORMULA From Philippe Deléham, Nov 28 2008: (Start) a(n) = 529*a(n-1); a(0)=23. G.f.: 23/(1-529*x). (End) MAPLE seq(23^(2*n+1), n=0..10); # Nathaniel Johnston, Jun 26 2011 MATHEMATICA NestList[529#&, 23, 15] (* Harvey P. Dale, Jan 17 2012 *) PROG (MAGMA) [23^(2*n+1): n in [0..15]]; // Vincenzo Librandi, Jun 26 2011 (PARI) a(n)=23^(2*n+1) \\ Charles R Greathouse IV, Jul 11 2016 CROSSREFS Cf. A013708-A013727, A013729. Sequence in context: A193430 A233213 A090674 * A028693 A324255 A273940 Adjacent sequences:  A013725 A013726 A013727 * A013729 A013730 A013731 KEYWORD nonn,easy AUTHOR STATUS approved

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Last modified October 23 06:58 EDT 2019. Contains 328335 sequences. (Running on oeis4.)