A196665 - OEIS

%I #8 Oct 02 2023 13:41:33

%S 1,13,247,4693,89167,1694173,32189287,611596453,11620332607,

%T 220786319533,4194940071127,79703861351413,1514373365676847,

%U 28773093947860093,546688785009341767,10387086915177493573,197354651388372377887,3749738376379075179853

%N Expansion of (1-6x)/(1-19x).

%H <a href="/index/Rec#order_01">Index entries for linear recurrences with constant coefficients</a>, signature (19).

%F a(0)=1, a(n)=13*19^(n-1) for n>0.

%F a(n)=Sum_0<=k<=n{A193722(n,k)*6^k}.

%Y Cf. A002001, A196660, A196661, A196662, A196663, A196664.

%K nonn

%O 0,2

%A _Philippe Deléham_, Oct 05 2011