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%I #13 Sep 08 2022 08:46:00
%S 8,53,323,1943,11663,69983,419903,2519423,15116543,90699263,544195583,
%T 3265173503,19591041023,117546246143,705277476863,4231664861183,
%U 25389989167103,152339935002623,914039610015743,5484237660094463,32905425960566783
%N 9*6^n-1.
%H Vincenzo Librandi, <a href="/A198846/b198846.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 (7,-6).
%F a(n) = 6*a(n-1)+5. a(n) = 7*a(n-1)-6*a(n-2), n>1.
%o (Magma) [9*6^n-1: n in [0..30]]
%K nonn,easy
%O 0,1
%A _Vincenzo Librandi_, Oct 31 2011
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