A013868 - OEIS

%I #28 May 30 2026 12:56:21

%S 2197,815730721,302875106592253,112455406951957393129,

%T 41753905413413116367045797,15502932802662396215269535105521,

%U 5756130429098929077956071497934208653,2137210935411428674141543654682486133398329,793531459841715586708036168178024323927865769397

%N a(n) = 13^(5*n + 3).

%H Vincenzo Librandi, <a href="/A013868/b013868.txt">Table of n, a(n) for n = 0..100</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 (371293).

%F a(n) = 371293*a(n-1). - _Wesley Ivan Hurt_, Jan 22 2022

%t 13^(5*Range[0, 10] + 3) (* _Paolo Xausa_, May 30 2026 *)

%o (Magma) [13^(5*n+3): n in [0..10]]; // _Vincenzo Librandi_, Jul 09 2011

%o (Maxima) makelist(13^(5*n+3), n ,0, 30); /* _Martin Ettl_, Oct 21 2012 */

%K nonn,easy

%O 0,1

%A _N. J. A. Sloane_