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 A040239 #20 Nov 29 2023 05:20:01 %S A040239 15,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30, %T A040239 1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1, %U A040239 30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30 %N A040239 Continued fraction for sqrt(255). %H A040239 <a href="/index/Con#confC">Index entries for continued fractions for constants</a>. %H A040239 <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (0,1). %F A040239 From _Amiram Eldar_, Nov 29 2023: (Start) %F A040239 Multiplicative with a(2^e) = 30, and a(p^e) = 1 for an odd prime p. %F A040239 Dirichlet g.f.: zeta(s) * (1 + 29/2^s). (End) %p A040239 with(numtheory): Digits := 300: convert(evalf(sqrt(255)),confrac); %t A040239 ContinuedFraction[Sqrt[255],90] (* _Harvey P. Dale_, Dec 25 2011 *) %K A040239 nonn,cofr,easy,mult %O A040239 0,1 %A A040239 _N. J. A. Sloane_