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 A198431 #8 Apr 23 2025 12:30:08
%S A198431 3,0,3,5,0,4,0,8,2,2,4,3,8,0,4,8,8,4,6,8,6,7,1,2,3,0,7,0,9,6,4,8,2,3,
%T A198431 7,8,0,6,0,1,5,8,8,8,1,0,7,1,5,5,2,2,2,8,5,3,9,0,3,6,8,9,6,4,8,2,0,9,
%U A198431 9,4,8,0,8,1,5,2,9,5,4,8,2,9,3,9,5,3,0,9,5,9,8,8,1,8,3,3,7,5,3
%N A198431 Decimal expansion of x>0 having x^2-3x=sin(x).
%C A198431 See A198414 for a guide to related sequences. The Mathematica program includes a graph.
%H A198431 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>.
%e A198431 3.0350408224380488468671230709648237806015888...
%t A198431 a = 1; b = -3; c = 1;
%t A198431 f[x_] := a*x^2 + b*x; g[x_] := c*Sin[x]
%t A198431 Plot[{f[x], g[x]}, {x, -.2, 3.5}]
%t A198431 r = x /. FindRoot[f[x] == g[x], {x, 3.0, 3.1}, WorkingPrecision -> 110]
%t A198431 RealDigits[r] (* A198431 *)
%Y A198431 Cf. A198414.
%K A198431 nonn,cons
%O A198431 1,1
%A A198431 _Clark Kimberling_, Oct 25 2011