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 A198550 #8 Apr 23 2025 12:40:15
%S A198550 6,4,4,0,9,2,5,3,0,1,9,3,0,7,2,5,5,8,9,9,1,2,8,9,2,1,5,2,5,1,3,0,0,8,
%T A198550 3,6,9,5,1,1,4,0,8,1,8,5,6,8,3,5,4,0,8,9,2,3,1,0,7,0,2,1,6,4,8,9,3,8,
%U A198550 1,4,9,6,2,6,8,7,7,2,8,8,7,1,2,1,5,7,8,7,2,4,5,7,7,4,4,6,7,6,0
%N A198550 Decimal expansion of x>0 having 3*x^2-x=sin(x).
%C A198550 See A198414 for a guide to related sequences. The Mathematica program includes a graph.
%H A198550 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>.
%e A198550 0.644092530193072558991289215251300836951140...
%t A198550 a = 3; b = -1; c = 1;
%t A198550 f[x_] := a*x^2 + b*x; g[x_] := c*Sin[x]
%t A198550 Plot[{f[x], g[x]}, {x, -.1, 1}]
%t A198550 r = x /. FindRoot[f[x] == g[x], {x, .64, .65}, WorkingPrecision -> 110]
%t A198550 RealDigits[r] (* A198550 *)
%Y A198550 Cf. A198414.
%K A198550 nonn,cons
%O A198550 0,1
%A A198550 _Clark Kimberling_, Oct 26 2011