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 A198499 #11 Apr 23 2025 12:34:19
%S A198499 6,0,6,4,8,1,0,5,6,5,4,6,5,5,1,7,0,0,0,6,1,5,0,5,0,8,5,3,9,8,3,0,0,8,
%T A198499 0,7,9,7,4,5,3,7,1,9,6,7,5,4,8,0,5,9,9,4,0,1,5,2,2,0,5,8,8,2,5,1,8,6,
%U A198499 1,8,3,7,5,1,8,3,3,7,5,0,8,2,0,8,3,2,3,8,9,4,9,2,2,0,9,5,2,8,9
%N A198499 Decimal expansion of x > 0 having 3*x^2+x = 3*sin(x).
%C A198499 See A198414 for a guide to related sequences. The Mathematica program includes a graph.
%H A198499 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>.
%e A198499 0.60648105654655170006150508539830080...
%t A198499 a = 3; b = 1; c = 3;
%t A198499 f[x_] := a*x^2 + b*x; g[x_] := c*Sin[x]
%t A198499 Plot[{f[x], g[x]}, {x, -1, 1}]
%t A198499 r = x /. FindRoot[f[x] == g[x], {x, .6, .61}, WorkingPrecision -> 110]
%t A198499 RealDigits[r] (* A198499 *)
%Y A198499 Cf. A198414.
%K A198499 nonn,cons
%O A198499 0,1
%A A198499 _Clark Kimberling_, Oct 25 2011
%E A198499 a(90) onwards corrected by _Georg Fischer_, Aug 01 2021