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%I #26 Dec 14 2023 06:04:13
%S 3,10,3,10,3,10,3,10,3,10,3,10,3,10,3,10,3,10,3,10,3,10,3,10,3,10,3,
%T 10,3,10,3,10,3,10,3,10,3,10,3,10,3,10,3,10,3,10,3,10,3,10,3,10,3,10,
%U 3,10,3,10,3,10,3,10,3,10,3,10
%N Period 2: repeat (3,10).
%C Continued fraction expansion of A176109.
%H <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (0,1).
%F a(n) = -7/2*(-1)^n + 13/2. - _Paolo P. Lava_, Oct 20 2006
%F G.f. (3+10x)/((1-x)(1+x)). - _R. J. Mathar_, Nov 21 2011
%t PadRight[{},100,{3,10}] (* _Harvey P. Dale_, Oct 31 2015 *)
%o (PARI) a(n)=3+n%2*7 \\ _Charles R Greathouse IV_, Dec 21 2011
%K nonn,easy
%O 0,1
%A _N. J. A. Sloane_
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