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a(n) = 17^(3*n + 1).
2

%I #23 Sep 08 2022 08:44:38

%S 17,83521,410338673,2015993900449,9904578032905937,

%T 48661191875666868481,239072435685151324847153,

%U 1174562876521148458974062689

%N a(n) = 17^(3*n + 1).

%H Vincenzo Librandi, <a href="/A013760/b013760.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 (4913).

%F From _Philippe Deléham_, Dec 03 2008: (Start)

%F a(n) = 4913*a(n-1), a(0)=17.

%F G.f.: 17/(1-4913*x).

%F a(n) = A013761(n)/17. (End)

%o (Magma) [17^(3*n+1): n in [0..15]]; // _Vincenzo Librandi_, May 24 2011

%o (Maxima) makelist(17^(3*n+1),n,0,20); /* _Martin Ettl_, Oct 21 2012 */

%o (PARI) a(n)=17^(3*n+1) \\ _Charles R Greathouse IV_, Jul 11 2016

%K nonn,easy

%O 0,1

%A _N. J. A. Sloane_