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%I #30 Sep 08 2022 08:44:38
%S 10,1000,100000,10000000,1000000000,100000000000,10000000000000,
%T 1000000000000000,100000000000000000,10000000000000000000,
%U 1000000000000000000000,100000000000000000000000
%N a(n) = 10^(2n+1).
%C Bisection of A011557 (powers of 10). - _Michel Marcus_, Jan 17 2016
%H Vincenzo Librandi, <a href="/A013715/b013715.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 (100).
%F From _Philippe Deléham_, Nov 25 2008: (Start)
%F G.f.: 10/(1-100*x).
%F a(n) = 100*a(n-1), n>0; a(0)=10. (End)
%p seq(10^(2*n+1),n=0..11); # _Nathaniel Johnston_, Jun 25 2011
%t 10^(2 Range[0, 15] + 1) (* _Wesley Ivan Hurt_, Jan 17 2016 *)
%o (Magma) [10^(2*n+1): n in [0..20]]; // _Vincenzo Librandi_, Jun 26 2011
%o (PARI) a(n) = 10^(2*n+1); \\ _Michel Marcus_, Jan 17 2016
%o (PARI) Vec(10/(1-100*x) + O(x^100)) \\ _Altug Alkan_, Jan 17 2016
%Y Cf. A013708-A013714, A013716-A013729, A011557.
%K nonn,easy
%O 0,1
%A _N. J. A. Sloane_
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