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 A040206 #18 Jul 08 2025 22:55:54
%S A040206 14,1,6,2,6,1,28,1,6,2,6,1,28,1,6,2,6,1,28,1,6,2,6,1,28,1,6,2,6,1,28,
%T A040206 1,6,2,6,1,28,1,6,2,6,1,28,1,6,2,6,1,28,1,6,2,6,1,28,1,6,2,6,1,28,1,6,
%U A040206 2,6,1,28,1,6,2,6,1,28,1,6,2,6,1,28,1,6,2,6,1,28,1,6
%N A040206 Continued fraction for sqrt(221).
%H A040206 <a href="/index/Con#confC">Index entries for continued fractions for constants</a>
%H A040206 <a href="/index/Rec#order_06">Index entries for linear recurrences with constant coefficients</a>, signature (0, 0, 0, 0, 0, 1).
%p A040206 with(numtheory): Digits := 300: convert(evalf(sqrt(221)),confrac);
%t A040206 ContinuedFraction[Sqrt[221],100] (* or *) PadRight[{14},100,{28,1,6,2,6,1}] (* _Harvey P. Dale_, Feb 04 2025 *)
%K A040206 nonn,cofr,easy
%O A040206 0,1
%A A040206 _N. J. A. Sloane_