A037747 - OEIS

%I #11 Oct 15 2015 10:38:00

%S 2,17,119,834,5840,40883,286181,2003268,14022878,98160149,687121043,

%T 4809847302,33668931116,235682517815,1649777624705,11548443372936,

%U 80839103610554,565873725273881,3961116076917167

%N Base 7 digits are, in order, the first n terms of the periodic sequence with initial period 2,3,0,1.

%H <a href="/index/Rec">Index entries for linear recurrences with constant coefficients</a>, signature (7,0,0,1,-7).

%F a(n) = 7a(n-1) + a(n-4) - 7a(n-5).

%F G.f.: ( x*(2+3*x+x^3) ) / ( (x-1)*(7*x-1)*(1+x)*(1+x^2) ). - _R. J. Mathar_, Oct 15 2015

%K nonn,base,easy

%O 1,1

%A _Clark Kimberling_