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%I #26 Dec 14 2023 05:53:41
%S 9,10,9,10,9,10,9,10,9,10,9,10,9,10,9,10,9,10,9,10,9,10,9,10,9,10,9,
%T 10,9,10,9,10,9,10,9,10,9,10,9,10,9,10,9,10,9,10,9,10,9,10,9,10,9,10,
%U 9,10,9,10,9,10,9,10,9,10,9,10
%N Period 2: repeat (9,10).
%C Continued fraction expansion of A176523. - _R. J. Mathar_, Mar 08 2012
%H <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (0,1).
%F G.f. ( -9-10*x ) / ( (x-1)*(1+x) ). - _R. J. Mathar_, Nov 21 2011
%t Table[9 + Mod[n, 2], {n, 0, 50}] (* _Jinyuan Wang_, Feb 26 2020 *)
%t PadRight[{},70,{9,10}] (* _Harvey P. Dale_, Sep 23 2021 *)
%o (PARI) a(n)=n%2+9 \\ _Charles R Greathouse IV_, Jul 13 2016
%K nonn,easy
%O 0,1
%A _N. J. A. Sloane_
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