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%I #11 Sep 08 2022 08:46:00
%S 2,9,44,219,1094,5469,27344,136719,683594,3417969,17089844,85449219,
%T 427246094,2136230469,10681152344,53405761719,267028808594,
%U 1335144042969,6675720214844,33378601074219,166893005371094,834465026855469
%N (7*5^n+1)/4.
%H Vincenzo Librandi, <a href="/A199308/b199308.txt">Table of n, a(n) for n = 0..1000</a>
%H <a href="/index/Rec">Index entries for linear recurrences with constant coefficients</a>, signature (6,-5).
%F a(n) = 5*a(n-1)-1.
%F a(n) = 6*a(n-1)-5*a(n-2).
%F G.f.: (2-3*x)/((1-x)*(1-5*x)).
%o (Magma) [(7*5^n+1)/4: n in [0..30]];
%K nonn,easy
%O 0,1
%A _Vincenzo Librandi_, Nov 05 2011
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