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 A198552 #8 Apr 23 2025 12:41:16
%S A198552 1,1,3,2,7,7,8,4,1,6,6,7,8,0,4,3,5,5,1,2,9,8,3,7,2,5,4,3,7,2,4,1,0,8,
%T A198552 3,8,5,0,6,9,7,7,3,0,0,2,2,8,8,6,6,0,9,6,0,8,8,4,8,6,9,9,0,8,5,6,8,4,
%U A198552 3,1,9,5,1,9,1,2,9,0,9,0,8,8,7,3,4,0,7,3,2,5,1,4,8,9,5,7,4,1,0
%N A198552 Decimal expansion of x>0 having 3*x^2-x=3*sin(x).
%C A198552 See A198414 for a guide to related sequences. The Mathematica program includes a graph.
%H A198552 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>.
%e A198552 1.1327784166780435512983725437241083850697730022...
%t A198552 a = 3; b = -1; c = 3;
%t A198552 f[x_] := a*x^2 + b*x; g[x_] := c*Sin[x]
%t A198552 Plot[{f[x], g[x]}, {x, -.1, 1.5}]
%t A198552 r = x /. FindRoot[f[x] == g[x], {x, 1.13, 1.14}, WorkingPrecision -> 110]
%t A198552 RealDigits[r] (* A198552 *)
%Y A198552 Cf. A198414.
%K A198552 nonn,cons
%O A198552 1,3
%A A198552 _Clark Kimberling_, Oct 26 2011