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 A199567 7*9^n+1. 1

%I

%S 8,64,568,5104,45928,413344,3720088,33480784,301327048,2711943424,

%T 24407490808,219667417264,1977006755368,17793060798304,

%U 160137547184728,1441237924662544,12971141321962888,116740271897665984,1050662447078993848

%N 7*9^n+1.

%H Vincenzo Librandi, <a href="/A199567/b199567.txt">Table of n, a(n) for n = 0..1000</a>

%H <a href="/Sindx_Rea.html#recLCC">Index to sequences with linear recurrences with constant coefficients</a>, signature (10,-9).

%F a(n) = 8*A187709(n).

%F a(n) = 9*a(n-1)-8.

%F a(n) = 10*a(n-1)-9*a(n-2).

%F G.f.: 8*(1-2*x)/((1-x)*(1-9*x)).

%F a(n) = (A096046(n)+1)*4. - _Martin Ettl_, Nov 13 2012

%o (MAGMA) [7*9^n+1: n in [0..30]];

%o (Maxima) A199567(n):=7*9^n+1\$ makelist(A199567(n),n,0,30); /* _Martin Ettl_, Nov 13 2012 */

%K nonn,easy

%O 0,1

%A _Vincenzo Librandi_, Nov 08 2011

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