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 A199750 2*11^n+1. 1

%I

%S 3,23,243,2663,29283,322103,3543123,38974343,428717763,4715895383,

%T 51874849203,570623341223,6276856753443,69045424287863,

%U 759499667166483,8354496338831303,91899459727144323,1010894056998587543,11119834626984462963

%N 2*11^n+1.

%H Vincenzo Librandi, <a href="/A199750/b199750.txt">Table of n, a(n) for n = 0..900</a>

%H <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (12,-11).

%F a(n) = 11*a(n-1)-10.

%F a(n) = 12*a(n-1)-11*a(n-2).

%F G.f.: (3-13*x)/((1-x)*(1-11*x)).

%t 2*11^Range[0,20]+1 (* or *) LinearRecurrence[{12,-11},{3,23},20] (* _Harvey P. Dale_, Aug 14 2012 *)

%o (MAGMA) [2*11^n+1: n in [0..30]];

%K nonn,easy

%O 0,1

%A _Vincenzo Librandi_, Nov 10 2011

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Last modified May 22 06:54 EDT 2022. Contains 353933 sequences. (Running on oeis4.)