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 A198492 #8 Apr 23 2025 12:31:24
%S A198492 3,5,5,1,3,1,5,4,5,6,0,0,1,2,4,3,7,1,0,2,4,7,4,5,6,6,3,1,9,6,2,5,4,3,
%T A198492 4,7,6,9,6,0,3,5,8,1,4,9,8,0,6,5,4,1,4,3,1,5,7,0,1,7,3,6,5,0,4,5,9,7,
%U A198492 3,0,4,8,6,7,1,5,3,6,3,7,9,8,3,6,7,9,7,3,3,0,2,7,5,9,3,4,6,9,8
%N A198492 Decimal expansion of x>0 having x^2-4x=4*sin(x).
%C A198492 See A198414 for a guide to related sequences. The Mathematica program includes a graph.
%H A198492 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>.
%e A198492 3.55131545600124371024745663196254347696...
%t A198492 a = 1; b = -4; c = 4;
%t A198492 f[x_] := a*x^2 + b*x; g[x_] := c*Sin[x]
%t A198492 Plot[{f[x], g[x]}, {x, -.2, 4}]
%t A198492 r = x /. FindRoot[f[x] == g[x], {x, 3.55, 3.56}, WorkingPrecision -> 110]
%t A198492 RealDigits[r] (* A198492 *)
%Y A198492 Cf. A198414.
%K A198492 nonn,cons
%O A198492 1,1
%A A198492 _Clark Kimberling_, Oct 25 2011