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 A010158 #23 Dec 27 2023 00:13:06
%S A010158 9,4,1,1,4,18,4,1,1,4,18,4,1,1,4,18,4,1,1,4,18,4,1,1,4,18,4,1,1,4,18,
%T A010158 4,1,1,4,18,4,1,1,4,18,4,1,1,4,18,4,1,1,4,18,4,1,1,4,18,4,1,1,4,18,4,
%U A010158 1,1,4,18,4,1,1,4,18,4,1,1,4
%N A010158 Continued fraction for sqrt(85).
%H A010158 Harry J. Smith, <a href="/A010158/b010158.txt">Table of n, a(n) for n = 0..20000</a>
%H A010158 G. Xiao, <a href="http://wims.unice.fr/~wims/en_tool~number~contfrac.en.html">Contfrac</a>
%H A010158 <a href="/index/Con#confC">Index entries for continued fractions for constants</a>
%H A010158 <a href="/index/Rec#order_05">Index entries for linear recurrences with constant coefficients</a>, signature (0, 0, 0, 0, 1).
%e A010158 9.219544457292887310002274281... = 9 + 1/(4 + 1/(1 + 1/(1 + 1/(4 + ...)))). - _Harry J. Smith_, Jun 10 2009
%t A010158 ContinuedFraction[Sqrt[85],300] (* _Vladimir Joseph Stephan Orlovsky_, Mar 09 2011 *)
%o A010158 (PARI) { allocatemem(932245000); default(realprecision, 24000); x=contfrac(sqrt(85)); for (n=0, 20000, write("b010158.txt", n, " ", x[n+1])); } \\ _Harry J. Smith_, Jun 10 2009
%Y A010158 Cf. A010536 Decimal expansion. - _Harry J. Smith_, Jun 10 2009
%K A010158 nonn,cofr
%O A010158 0,1
%A A010158 _N. J. A. Sloane_