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 A010491 #15 Aug 21 2023 11:16:24
%S A010491 6,0,8,2,7,6,2,5,3,0,2,9,8,2,1,9,6,8,8,9,9,9,6,8,4,2,4,5,2,0,2,0,6,7,
%T A010491 0,6,2,0,8,4,9,7,0,0,9,4,7,8,6,4,1,1,1,8,6,4,1,9,1,5,3,0,4,6,4,8,6,3,
%U A010491 3,2,7,2,5,3,1,8,9,1,0,2,3,9,8,0,3,0,6,6,4,2,7,9,5,7,8,4,8,6,6
%N A010491 Decimal expansion of square root of 37.
%C A010491 Continued fraction expansion is 6 followed by {12} repeated. - _Harry J. Smith_, Jun 04 2009
%H A010491 Harry J. Smith, <a href="/A010491/b010491.txt">Table of n, a(n) for n = 1..20000</a>
%H A010491 <a href="/index/Al#algebraic_02">Index entries for algebraic numbers, degree 2</a>
%e A010491 6.082762530298219688999684245202067062084970094786411186419153046486332....
%t A010491 RealDigits[N[Sqrt[37],200]][[1]] (* _Vladimir Joseph Stephan Orlovsky_, Feb 24 2011 *)
%o A010491 (PARI) default(realprecision, 20080); x=sqrt(37); for (n=1, 20000, d=floor(x); x=(x-d)*10; write("b010491.txt", n, " ", d)); \\ _Harry J. Smith_, Jun 04 2009
%Y A010491 Cf. A040030 (continued fraction).
%K A010491 nonn,cons
%O A010491 1,1
%A A010491 _N. J. A. Sloane_