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 A200484 #6 Feb 07 2025 16:44:07
%S A200484 1,2,5,5,4,4,5,6,4,8,9,2,1,7,7,2,0,6,0,8,3,1,9,7,6,5,0,7,2,1,7,5,5,9,
%T A200484 2,7,0,5,5,0,3,7,7,7,0,2,7,6,5,1,8,1,4,9,1,7,2,2,4,7,0,8,2,6,6,9,9,3,
%U A200484 6,9,7,5,6,0,6,2,3,0,3,4,4,1,7,1,3,3,9,1,9,4,5,7,1,2,0,3,7,3,9
%N A200484 Decimal expansion of least x>0 satisfying x^2-2x+4=tan(x).
%C A200484 See A200338 for a guide to related sequences. The Mathematica program includes a graph.
%e A200484 x=1.2554456489217720608319765072175592705503777...
%t A200484 a = 1; b = -2; c = 4;
%t A200484 f[x_] := a*x^2 + b*x + c; g[x_] := Tan[x]
%t A200484 Plot[{f[x], g[x]}, {x, -.1, Pi/2}, {AxesOrigin -> {0, 0}}]
%t A200484 r = x /. FindRoot[f[x] == g[x], {x, 1.2, 1.3}, WorkingPrecision -> 110]
%t A200484 RealDigits[r] (* A200484 *)
%Y A200484 Cf. A200338.
%K A200484 nonn,cons
%O A200484 1,2
%A A200484 _Clark Kimberling_, Nov 18 2011