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 A010549 #22 Feb 11 2025 14:47:12
%S A010549 9,8,9,9,4,9,4,9,3,6,6,1,1,6,6,5,3,4,1,6,1,1,8,2,1,0,6,9,4,6,7,8,8,6,
%T A010549 5,4,9,9,8,7,7,0,3,1,2,7,6,3,8,6,3,6,5,1,2,2,3,6,7,5,8,1,6,5,9,3,5,1,
%U A010549 2,7,3,4,9,2,3,4,7,4,9,2,7,1,9,5,2,7,1,2,7,4,0,2,9,3,4,9,1,0,0,9,1,4,5,0,9
%N A010549 Decimal expansion of square root of 98.
%C A010549 Continued fraction expansion is 9 followed by {1, 8, 1, 18} repeated. - _Harry J. Smith_, Jun 12 2009
%C A010549 7*2^(1/2) = sqrt(98) is also the maximum width of the arms of the cellular automaton described in A294020. - _Omar E. Pol_, Oct 29 2017
%H A010549 Harry J. Smith, <a href="/A010549/b010549.txt">Table of n, a(n) for n = 1..20000</a>
%H A010549 <a href="/index/Al#algebraic_02">Index entries for algebraic numbers, degree 2</a>.
%e A010549 9.899494936611665341611821069467886549987703127638636512236758165935127...
%t A010549 RealDigits[N[Sqrt[98],200]][[1]] (* _Vladimir Joseph Stephan Orlovsky_, Feb 05 2012 *)
%t A010549 RealDigits[Sqrt[98],10,120][[1]] (* _Harvey P. Dale_, May 21 2023 *)
%o A010549 (PARI) { default(realprecision, 20080); x=sqrt(98); for (n=1, 20000, d=floor(x); x=(x-d)*10; write("b010549.txt", n, " ", d)); } \\ _Harry J. Smith_, Jun 12 2009
%Y A010549 Cf. A010169 Continued fraction.
%K A010549 nonn,cons
%O A010549 1,1
%A A010549 _N. J. A. Sloane_
%E A010549 Final digits of sequence corrected using the b-file. - _N. J. A. Sloane_, Aug 30 2009