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 A198561 #8 Apr 23 2025 12:43:00
%S A198561 1,1,8,7,3,6,4,0,6,6,1,9,5,2,4,5,8,3,4,7,2,4,9,0,3,0,1,1,2,7,1,0,0,3,
%T A198561 9,5,6,2,4,6,6,1,5,0,3,1,6,6,7,4,8,0,0,1,7,0,9,6,6,3,5,3,7,2,9,0,5,7,
%U A198561 3,6,2,8,6,0,2,4,5,1,3,1,7,6,1,7,7,9,9,6,3,6,4,1,4,2,4,2,4,1,0
%N A198561 Decimal expansion of x>0 having 3*x^2-2x=2*sin(x).
%C A198561 See A198414 for a guide to related sequences. The Mathematica program includes a graph.
%H A198561 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>.
%e A198561 1.1873640661952458347249030112710039562466150...
%t A198561 a = 3; b = -2; c = 2;
%t A198561 f[x_] := a*x^2 + b*x; g[x_] := c*Sin[x]
%t A198561 Plot[{f[x], g[x]}, {x, -.2, 1.3}]
%t A198561 r = x /. FindRoot[f[x] == g[x], {x, 1.18, 1.19}, WorkingPrecision -> 110]
%t A198561 RealDigits[r] (* A198561 *)
%Y A198561 Cf. A198414.
%K A198561 nonn,cons
%O A198561 1,3
%A A198561 _Clark Kimberling_, Oct 26 2011