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 A198502 #8 Apr 23 2025 12:36:21
%S A198502 6,2,4,2,0,9,2,8,7,0,4,8,3,2,7,5,5,8,0,0,5,9,4,1,4,5,0,4,3,9,2,0,0,8,
%T A198502 2,8,5,7,6,6,9,3,7,0,8,3,5,4,9,8,5,7,4,5,3,2,6,6,4,6,6,2,5,1,6,3,1,3,
%U A198502 3,3,7,2,1,0,9,4,2,8,2,2,0,8,9,1,4,0,5,8,5,0,7,6,3,7,7,5,8,9,1
%N A198502 Decimal expansion of x>0 having 3*x^2=2*sin(x).
%C A198502 See A198414 for a guide to related sequences. The Mathematica program includes a graph.
%H A198502 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>.
%e A198502 0.624209287048327558005941450439200...
%e A198502 .
%e A198502 cons
%t A198502 a = 3; b = 0; c = 2;
%t A198502 f[x_] := a*x^2 + b*x; g[x_] := c*Sin[x]
%t A198502 Plot[{f[x], g[x]}, {x, -.2, 1}]
%t A198502 r = x /. FindRoot[f[x] == g[x], {x, .62, .63}, WorkingPrecision -> 110]
%t A198502 RealDigits[r] (* A198502 *)
%Y A198502 Cf. A198414.
%K A198502 nonn,cons
%O A198502 0,1
%A A198502 _Clark Kimberling_, Oct 25 2011