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 A198498 #7 Apr 23 2025 12:34:12
%S A198498 3,2,1,8,8,0,8,9,8,7,4,2,3,6,4,2,3,9,8,6,1,8,3,3,8,4,5,3,9,4,4,7,8,4,
%T A198498 5,2,8,3,6,6,7,9,7,7,6,7,5,0,1,1,4,2,7,1,4,3,5,1,9,1,1,2,9,3,4,6,9,1,
%U A198498 4,8,7,1,9,1,5,2,6,7,9,1,6,3,3,1,0,6,2,4,1,3,2,0,2,7,3,6,6,4,9
%N A198498 Decimal expansion of x>0 having 3*x^2+x=2*sin(x).
%C A198498 See A198414 for a guide to related sequences. The
%C A198498 Mathematica program includes a graph.
%H A198498 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>.
%e A198498 0.3218808987423642398618338453944...
%t A198498 a = 3; b = 1; c = 2;
%t A198498 f[x_] := a*x^2 + b*x; g[x_] := c*Sin[x]
%t A198498 Plot[{f[x], g[x]}, {x, -1, 1}]
%t A198498 r = x /. FindRoot[f[x] == g[x], {x, .32, .33}, WorkingPrecision -> 110]
%t A198498 RealDigits[r] (* A198498 *)
%Y A198498 Cf. A198414.
%K A198498 nonn,cons
%O A198498 0,1
%A A198498 _Clark Kimberling_, Oct 25 2011