A152898 - OEIS

%I #17 Dec 14 2023 05:15:06

%S 1,4,0,0,0,1,4,0,0,0,1,4,0,0,0,1,4,0,0,0,1,4,0,0,0,1,4,0,0,0,1,4,0,0,

%T 0,1,4,0,0,0,1,4,0,0,0,1,4,0,0,0,1,4,0,0,0,1,4,0,0,0,1,4,0,0,0,1,4,0,

%U 0,0,1,4,0,0,0,1,4,0,0,0,1,4,0,0,0,1,4,0,0,0,1,4,0,0,0,1,4,0,0,0,1,4,0,0,0

%N Periodic sequence [1,4,0,0,0] of period 5.

%H <a href="/index/Rec#order_05">Index entries for linear recurrences with constant coefficients</a>, signature (0,0,0,0,1).

%F a(n+5) = a(n) with a(0) = 1, a(1) = 4 and a(2) = a(3) = a(4) = 0.

%F G.f.: (1+4*z)/(1-z^5).

%t PadRight[{},110,{1,4,0,0,0}] (* _Harvey P. Dale_, Jan 21 2012 *)

%Y Cf. A026065.

%K easy,nonn

%O 0,2

%A _Richard Choulet_, Dec 14 2008