A199419 - OEIS

%I #11 Sep 08 2022 08:46:00

%S 5,29,197,1373,9605,67229,470597,3294173,23059205,161414429,

%T 1129900997,7909306973,55365148805,387556041629,2712892291397,

%U 18990246039773,132931722278405,930522055948829,6513654391641797,45595580741492573

%N 4*7^n+1.

%H Vincenzo Librandi, <a href="/A199419/b199419.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 (8,-7).

%F a(n) = 7*a(n-1)-6.

%F a(n) = 8*a(n-1)-7*a(n-2).

%F G.f.: (5-11*x)/((1-x)*(1-7*x)).

%o (Magma) [4*7^n+1: n in [0..30]];

%K nonn,easy

%O 0,1

%A _Vincenzo Librandi_, Nov 06 2011