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 A200401 #8 Feb 07 2025 16:44:07
%S A200401 1,5,1,1,7,0,2,5,1,6,4,9,5,3,8,3,6,1,8,2,4,6,3,0,3,7,3,0,2,2,1,7,7,2,
%T A200401 8,8,4,3,0,0,9,8,4,4,0,8,3,7,2,1,3,2,9,5,3,4,1,1,3,5,6,8,5,3,7,3,3,7,
%U A200401 4,2,1,1,9,4,6,3,6,0,4,6,5,8,1,3,6,2,2,6,8,1,9,0,7,1,7,8,2,1,1
%N A200401 Decimal expansion of least x>0 satisfying 3*x^2+4*x+4=tan(x).
%C A200401 See A200338 for a guide to related sequences. The Mathematica program includes a graph.
%e A200401 x=1.5117025164953836182463037302217728843009844083721...
%t A200401 a = 3; b = 4; c = 4;
%t A200401 f[x_] := a*x^2 + b*x + c; g[x_] := Tan[x]
%t A200401 Plot[{f[x], g[x]}, {x, -.1, Pi/2}, {AxesOrigin -> {0, 0}}]
%t A200401 r = x /. FindRoot[f[x] == g[x], {x, 1.5, 1.6}, WorkingPrecision -> 110]
%t A200401 RealDigits[r] (* A200401 *)
%Y A200401 Cf. A200338.
%K A200401 nonn,cons
%O A200401 1,2
%A A200401 _Clark Kimberling_, Nov 17 2011