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 A010535 #15 Feb 11 2025 14:47:32
%S A010535 9,1,6,5,1,5,1,3,8,9,9,1,1,6,8,0,0,1,3,1,7,6,0,9,4,3,8,7,4,5,6,0,1,6,
%T A010535 9,7,7,9,6,8,9,1,3,1,5,3,5,3,5,9,4,3,8,0,5,2,1,4,4,8,4,2,4,7,8,1,3,7,
%U A010535 3,6,8,5,1,0,9,5,5,4,1,7,7,3,2,0,8,7,2,3,1,1,8,9,8,6,8,9,0,0,6
%N A010535 Decimal expansion of square root of 84.
%C A010535 Continued fraction expansion is 9 followed by {6, 18} repeated. - _Harry J. Smith_, Jun 10 2009
%H A010535 Harry J. Smith, <a href="/A010535/b010535.txt">Table of n, a(n) for n = 1..20000</a>
%H A010535 <a href="/index/Al#algebraic_02">Index entries for algebraic numbers, degree 2</a>.
%e A010535 9.165151389911680013176094387456016977968913153535943805214484247813736...
%t A010535 RealDigits[N[84^(1/2),200]][[1]] (* _Vladimir Joseph Stephan Orlovsky_, Jan 23 2012 *)
%o A010535 (PARI) { default(realprecision, 20080); x=sqrt(84); for (n=1, 20000, d=floor(x); x=(x-d)*10; write("b010535.txt", n, " ", d)); } \\ _Harry J. Smith_, Jun 10 2009
%Y A010535 Cf. A040074 Continued fraction.
%K A010535 nonn,cons
%O A010535 1,1
%A A010535 _N. J. A. Sloane_