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A010723 Period 2: repeat (6,7).

%I A010723 #25 Mar 06 2024 13:55:45
%S A010723 6,7,6,7,6,7,6,7,6,7,6,7,6,7,6,7,6,7,6,7,6,7,6,7,6,7,6,7,6,7,6,7,6,7,
%T A010723 6,7,6,7,6,7,6,7,6,7,6,7,6,7,6,7,6,7,6,7,6,7,6,7,6,7,6,7,6,7,6,7,6,7,
%U A010723 6,7,6,7,6,7,6,7,6,7,6,7,6
%N A010723 Period 2: repeat (6,7).
%C A010723 Continued fraction of 3 + sqrt(483)/7 = A176399. - _R. J. Mathar_, Nov 21 2011
%H A010723 <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (0,1)
%F A010723 a(n) = -(1/2)*(-1)^n + 13/2. - _Paolo P. Lava_, Oct 27 2006
%F A010723 G.f. (-6-7*x) / ( (x-1)*(1+x) ). - _R. J. Mathar_, Nov 21 2011
%t A010723 Table[6 + Mod[n, 2], {n, 0, 50}] (* _Jinyuan Wang_, Feb 26 2020 *)
%t A010723 PadRight[{},120,{6,7}] (* _Harvey P. Dale_, Mar 06 2024 *)
%o A010723 (PARI) a(n)=n%2+6 \\ _Charles R Greathouse IV_, Jul 13 2016
%K A010723 nonn,easy
%O A010723 0,1
%A A010723 _N. J. A. Sloane_