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%I #16 Mar 20 2023 11:52:17
%S 2,8,38,188,938,4688,23438,117188,585938,2929688,14648438,73242188,
%T 366210938,1831054688,9155273438,45776367188,228881835938,
%U 1144409179688,5722045898438,28610229492188,143051147460938,715255737304688
%N a(n) = (3*5^n+1)/2.
%H Vincenzo Librandi, <a href="/A199213/b199213.txt">Table of n, a(n) for n = 0..1000</a>
%H <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (6,-5).
%F a(n) = 2*A083065(n).
%F a(n) = 5*a(n-1)-2.
%F a(n) = 6*a(n-1)-5*a(n-2).
%F G.f.: 2*(1-2*x)/((1-x)*(1-5*x)). - _Bruno Berselli_, Nov 04 2011
%o (Magma) [(3*5^n+1)/2: n in [0..30]];
%Y Cf. A083065.
%K nonn,easy
%O 0,1
%A _Vincenzo Librandi_, Nov 04 2011
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