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 A010239 #12 Dec 20 2015 03:02:32
%S A010239 2,12,2,18,1,1,1,1,4,1,1,24,1,9,1,2,19,1,2,2,12,3,2,1,3,1,2,1,2,1,1,1,
%T A010239 2,2,2,3,12,2,1,1,22,2,1,6,1,3,2,2,1,2,5,1,1,1,1,1,1,19,4,1,9,3,1,2,2,
%U A010239 1,1,1,46,25,2,2,2,1,1,4,4
%N A010239 Continued fraction for cube root of 9.
%H A010239 Harry J. Smith, <a href="/A010239/b010239.txt">Table of n, a(n) for n = 0..20000</a>
%H A010239 G. Xiao, <a href="http://wims.unice.fr/~wims/en_tool~number~contfrac.en.html">Contfrac</a>
%H A010239 <a href="/index/Con#confC">Index entries for continued fractions for constants</a>
%e A010239 9^(1/3) = 2.080083823051904... = 2 + 1/(12 + 1/(2 + 1/(18 + 1/(1 + ...)))). - _Harry J. Smith_, May 08 2009
%o A010239 (PARI) { allocatemem(932245000); default(realprecision, 21000); x=contfrac(9^(1/3)); for (n=1, 20001, write("b010239.txt", n-1, " ", x[n])); } \\ _Harry J. Smith_, May 08 2009
%Y A010239 Cf. A010581 = Decimal expansion. - _Harry J. Smith_, May 08 2009
%K A010239 nonn,cofr
%O A010239 0,1
%A A010239 _N. J. A. Sloane_