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 A200348 #6 Feb 07 2025 16:44:06
%S A200348 1,4,4,6,1,9,2,4,9,5,1,6,1,0,3,6,9,3,8,9,4,7,5,9,6,0,3,9,9,3,7,2,1,2,
%T A200348 7,4,0,5,3,0,0,7,9,5,3,2,7,6,4,2,6,9,3,6,1,9,4,0,6,5,0,5,2,0,6,5,5,9,
%U A200348 8,5,9,2,6,0,2,6,0,7,5,3,6,5,2,3,5,3,4,7,4,8,7,8,0,1,9,1,7,7,0
%N A200348 Decimal expansion of least x>0 satisfying x^2+2x+3=tan(x).
%C A200348 See A200338 for a guide to related sequences. The Mathematica program includes a graph.
%e A200348 x=1.4461924951610369389475960399372127405300...
%t A200348 a = 1; b = 2; c = 3;
%t A200348 f[x_] := a*x^2 + b*x + c; g[x_] := Tan[x]
%t A200348 Plot[{f[x], g[x]}, {x, -.1, Pi/2}, {AxesOrigin -> {0, 0}}]
%t A200348 r = x /. FindRoot[f[x] == g[x], {x, 1.4, 1.5}, WorkingPrecision -> 110]
%t A200348 RealDigits[r] (* A200348 *)
%Y A200348 Cf. A200338.
%K A200348 nonn,cons
%O A200348 1,2
%A A200348 _Clark Kimberling_, Nov 16 2011