|
%I #24 Sep 08 2022 08:44:38
%S 23,12167,6436343,3404825447,1801152661463,952809757913927,
%T 504036361936467383,266635235464391245607,141050039560662968926103,
%U 74615470927590710561908487,39471584120695485887249589623
%N a(n) = 23^(2*n + 1).
%H Vincenzo Librandi, <a href="/A013728/b013728.txt">Table of n, a(n) for n = 0..200</a>
%H Tanya Khovanova, <a href="http://www.tanyakhovanova.com/RecursiveSequences/RecursiveSequences.html">Recursive Sequences</a>
%H <a href="/index/Rec#order_01">Index entries for linear recurrences with constant coefficients</a>, signature (529).
%F From _Philippe Deléham_, Nov 28 2008: (Start)
%F a(n) = 529*a(n-1); a(0)=23.
%F G.f.: 23/(1-529*x). (End)
%p seq(23^(2*n+1),n=0..10); # _Nathaniel Johnston_, Jun 26 2011
%t NestList[529#&,23,15] (* _Harvey P. Dale_, Jan 17 2012 *)
%o (Magma) [23^(2*n+1): n in [0..15]]; // _Vincenzo Librandi_, Jun 26 2011
%o (PARI) a(n)=23^(2*n+1) \\ _Charles R Greathouse IV_, Jul 11 2016
%Y Cf. A013708-A013727, A013729.
%K nonn,easy
%O 0,1
%A _N. J. A. Sloane_
| 