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 A040074 #22 Dec 27 2023 00:51:12
%S A040074 9,6,18,6,18,6,18,6,18,6,18,6,18,6,18,6,18,6,18,6,18,6,18,6,18,6,18,6,
%T A040074 18,6,18,6,18,6,18,6,18,6,18,6,18,6,18,6,18,6,18,6,18,6,18,6,18,6,18,
%U A040074 6,18,6,18,6,18,6,18,6,18,6
%N A040074 Continued fraction for sqrt(84).
%H A040074 Harry J. Smith, <a href="/A040074/b040074.txt">Table of n, a(n) for n = 0..20000</a>
%H A040074 G. Xiao, <a href="http://wims.unice.fr/~wims/en_tool~number~contfrac.en.html">Contfrac</a>
%H A040074 <a href="/index/Con#confC">Index entries for continued fractions for constants</a>
%H A040074 <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (0, 1).
%e A040074 9.1651513899116800131760943... = 9 + 1/(6 + 1/(18 + 1/(6 + 1/(18 + ...)))). - _Harry J. Smith_, Jun 10 2009
%p A040074 Digits := 100: convert(evalf(sqrt(N)),confrac,90,'cvgts'):
%t A040074 ContinuedFraction[Sqrt[84],300] (* _Vladimir Joseph Stephan Orlovsky_, Mar 09 2011 *)
%o A040074 (PARI) { allocatemem(932245000); default(realprecision, 42000); x=contfrac(sqrt(84)); for (n=0, 20000, write("b040074.txt", n, " ", x[n+1])); } \\ _Harry J. Smith_, Jun 10 2009
%Y A040074 Cf. A010535 Decimal expansion. - _Harry J. Smith_, Jun 10 2009
%K A040074 nonn,cofr,easy
%O A040074 0,1
%A A040074 _N. J. A. Sloane_