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 A198494 #9 Apr 23 2025 12:33:12
%S A198494 8,3,2,6,0,2,2,2,1,7,6,6,6,8,9,5,5,9,5,4,1,7,0,6,5,2,0,5,9,7,9,3,4,9,
%T A198494 7,4,0,5,6,7,1,3,1,2,5,5,3,8,7,7,4,9,7,2,1,8,6,2,5,4,5,8,6,8,8,0,9,3,
%U A198494 6,9,0,1,6,2,4,5,2,3,1,7,9,5,6,9,8,5,6,0,4,1,6,5,2,1,2,4,9,2,5
%N A198494 Decimal expansion of x>0 having 2x^2+x=3*sin(x).
%C A198494 See A198414 for a guide to related sequences. The Mathematica program includes a graph.
%H A198494 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>.
%e A198494 0.8326022217666895595417065205979...
%t A198494 a = 2; b = 1; c = 3;
%t A198494 f[x_] := a*x^2 + b*x; g[x_] := c*Sin[x]
%t A198494 Plot[{f[x], g[x]}, {x, -1, 1}]
%t A198494 r = x /. FindRoot[f[x] == g[x], {x, .83, .84}, WorkingPrecision -> 110]
%t A198494 RealDigits[r] (* A198494 *)
%Y A198494 Cf. A198414.
%K A198494 nonn,cons
%O A198494 0,1
%A A198494 _Clark Kimberling_, Oct 25 2011