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%I
%S 4,34,364,3994,43924,483154,5314684,58461514,643076644,7073843074,
%T 77812273804,855935011834,9415285130164,103568136431794,
%U 1139249500749724,12531744508246954,137849189590716484,1516341085497881314
%N 3*11^n+1
%H Vincenzo Librandi, <a href="/A199752/b199752.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.: 2*(2-7*x)/((1-x)*(1-11*x)).
%t LinearRecurrence[{12,-11},{4,34},30] (* or *) NestList[11#-10&,4 ,30] (* _Harvey P. Dale_, May 09 2013 *)
%o (Magma) [3*11^n+1: n in [0..30]];
%K nonn,easy
%O 0,1
%A _Vincenzo Librandi_, Nov 10 2011
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