This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A010708 #28 May 26 2024 01:40:26
%S A010708 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 A010708 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 A010708 3,10,3,10,3,10,3,10,3,10,3,10
%N A010708 Period 2: repeat [3,10].
%C A010708 Continued fraction expansion of A176109.
%H A010708 <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (0,1).
%F A010708 a(n) = -7/2*(-1)^n + 13/2. - _Paolo P. Lava_, Oct 20 2006
%F A010708 G.f. (3+10x)/((1-x)*(1+x)). - _R. J. Mathar_, Nov 21 2011
%F A010708 a(n+2) = a(n). - _Wesley Ivan Hurt_, May 26 2024
%t A010708 PadRight[{},100,{3,10}] (* _Harvey P. Dale_, Oct 31 2015 *)
%o A010708 (PARI) a(n)=3+n%2*7 \\ _Charles R Greathouse IV_, Dec 21 2011
%Y A010708 Cf. A176109.
%K A010708 nonn,easy
%O A010708 0,1
%A A010708 _N. J. A. Sloane_