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 A010140 #23 Dec 27 2023 00:14:31
%S A010140 7,2,1,6,1,2,14,2,1,6,1,2,14,2,1,6,1,2,14,2,1,6,1,2,14,2,1,6,1,2,14,2,
%T A010140 1,6,1,2,14,2,1,6,1,2,14,2,1,6,1,2,14,2,1,6,1,2,14,2,1,6,1,2,14,2,1,6,
%U A010140 1,2,14,2,1,6,1,2,14,2,1
%N A010140 Continued fraction for sqrt(54).
%H A010140 Harry J. Smith, <a href="/A010140/b010140.txt">Table of n, a(n) for n = 0..20000</a>
%H A010140 G. Xiao, <a href="http://wims.unice.fr/~wims/en_tool~number~contfrac.en.html">Contfrac</a>
%H A010140 <a href="/index/Con#confC">Index entries for continued fractions for constants</a>
%H A010140 <a href="/index/Rec#order_06">Index entries for linear recurrences with constant coefficients</a>, signature (0, 0, 0, 0, 0, 1).
%e A010140 7.348469228349534294591852224... = 7 + 1/(2 + 1/(1 + 1/(6 + 1/(1 + ...)))). - _Harry J. Smith_, Jun 06 2009
%t A010140 ContinuedFraction[Sqrt[54],300] (* _Vladimir Joseph Stephan Orlovsky_, Mar 07 2011 *)
%o A010140 (PARI) { allocatemem(932245000); default(realprecision, 21000); x=contfrac(sqrt(54)); for (n=0, 20000, write("b010140.txt", n, " ", x[n+1])); } \\ _Harry J. Smith_, Jun 06 2009
%Y A010140 Cf. A010507 Decimal expansion. - _Harry J. Smith_, Jun 06 2009
%K A010140 nonn,cofr
%O A010140 0,1
%A A010140 _N. J. A. Sloane_