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 A010518 #13 Dec 20 2015 03:22:46
%S A010518 8,1,2,4,0,3,8,4,0,4,6,3,5,9,6,0,3,6,0,4,5,9,8,8,3,5,6,8,2,6,6,0,4,0,
%T A010518 3,4,8,5,0,4,2,0,4,0,8,6,7,2,5,3,1,2,8,2,7,6,5,1,5,7,5,5,9,4,5,3,2,9,
%U A010518 1,6,8,0,2,8,4,0,6,7,2,6,9,4,9,9,9,1,5,7,6,0,2,9,4,7,9,3,6,8,7
%N A010518 Decimal expansion of square root of 66.
%C A010518 Continued fraction expansion is 8 followed by {8, 16} repeated. - _Harry J. Smith_, Jun 08 2009
%H A010518 Harry J. Smith, <a href="/A010518/b010518.txt">Table of n, a(n) for n = 1..20000</a>
%e A010518 8.124038404635960360459883568266040348504204086725312827651575594532916... - _Harry J. Smith_, Jun 08 2009
%t A010518 RealDigits[N[66^(1/2),200]][[1]] (* _Vladimir Joseph Stephan Orlovsky_, Jan 22 2012 *)
%o A010518 (PARI) { default(realprecision, 20080); x=sqrt(66); for (n=1, 20000, d=floor(x); x=(x-d)*10; write("b010518.txt", n, " ", d)); } \\ _Harry J. Smith_, Jun 08 2009
%Y A010518 Cf. A040057 Continued fraction. - _Harry J. Smith_, Jun 08 2009
%K A010518 nonn,cons
%O A010518 1,1
%A A010518 _N. J. A. Sloane_