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 A010485 #21 Dec 17 2024 09:56:52
%S A010485 5,4,7,7,2,2,5,5,7,5,0,5,1,6,6,1,1,3,4,5,6,9,6,9,7,8,2,8,0,0,8,0,2,1,
%T A010485 3,3,9,5,2,7,4,4,6,9,4,9,9,7,9,8,3,2,5,4,2,2,6,8,9,4,4,4,9,7,3,2,4,9,
%U A010485 3,2,7,7,1,2,2,7,2,2,7,3,3,8,0,0,8,5,8,4,3,6,1,6,3,8,7,0,6,2,5
%N A010485 Decimal expansion of square root of 30.
%C A010485 Continued fraction expansion is 5 followed by {2, 10} repeated. - _Harry J. Smith_, Jun 04 2009
%H A010485 Harry J. Smith, <a href="/A010485/b010485.txt">Table of n, a(n) for n = 1..20000</a>
%H A010485 <a href="/index/Al#algebraic_02">Index entries for algebraic numbers, degree 2</a>
%F A010485 Equals A010464*A002163 = 1/A020787. - _R. J. Mathar_, Dec 17 2024
%e A010485 5.477225575051661134569697828008021339527446949979832542268944....
%t A010485 RealDigits[N[Sqrt[30], 200]][[1]] (* _Vladimir Joseph Stephan Orlovsky_, Feb 22 2011 *)
%o A010485 (PARI) default(realprecision, 20080); x=sqrt(30); for (n=1, 20000, d=floor(x); x=(x-d)*10; write("b010485.txt", n, " ", d)); \\ _Harry J. Smith_, Jun 04 2009
%Y A010485 Cf. A040024, continued fraction. - _Harry J. Smith_, Jun 04 2009
%K A010485 nonn,cons,easy
%O A010485 1,1
%A A010485 _N. J. A. Sloane_