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 A200490 #6 Feb 07 2025 16:44:07
%S A200490 4,3,1,4,4,3,5,4,4,9,6,7,0,4,5,5,3,5,1,5,4,8,7,4,3,8,7,5,0,8,5,5,3,8,
%T A200490 7,3,7,0,4,0,6,2,4,5,8,7,4,9,8,9,0,5,7,9,1,2,3,4,1,6,7,7,0,1,4,7,4,5,
%U A200490 6,6,2,6,1,3,7,5,5,8,6,7,9,6,7,4,0,5,9,6,7,0,1,4,6,0,7,2,7,3,9
%N A200490 Decimal expansion of least x>0 satisfying x^2-4x+2=tan(x).
%C A200490 See A200338 for a guide to related sequences. The Mathematica program includes a graph.
%e A200490 x=0.4314435449670455351548743875085538737040...
%t A200490 a = 1; b = -4; c = 2;
%t A200490 f[x_] := a*x^2 + b*x + c; g[x_] := Tan[x]
%t A200490 Plot[{f[x], g[x]}, {x, -.1, Pi/2}, {AxesOrigin -> {0, 0}}]
%t A200490 r = x /. FindRoot[f[x] == g[x], {x, .43, .44}, WorkingPrecision -> 110]
%t A200490 RealDigits[r] (* A200490 *)
%Y A200490 Cf. A200338.
%K A200490 nonn,cons
%O A200490 0,1
%A A200490 _Clark Kimberling_, Nov 18 2011