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a(n) = 10^(5*n + 3).
1

%I #18 Sep 08 2022 08:44:38

%S 1000,100000000,10000000000000,1000000000000000000,

%T 100000000000000000000000,10000000000000000000000000000,

%U 1000000000000000000000000000000000,100000000000000000000000000000000000000,10000000000000000000000000000000000000000000

%N a(n) = 10^(5*n + 3).

%H Vincenzo Librandi, <a href="/A013856/b013856.txt">Table of n, a(n) for n = 0..50</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 (100000).

%o (Magma) [10^(5*n+3): n in [0..10]]; // _Vincenzo Librandi_, Jul 08 2011

%o (Maxima) makelist(10^(5*n+3),n,0,20); /* _Martin Ettl_, Oct 21 2012 */

%K nonn,easy

%O 0,1

%A _N. J. A. Sloane_