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 A200385 #6 Feb 07 2025 16:44:07
%S A200385 1,4,5,1,1,4,1,2,5,8,9,1,5,4,6,0,1,9,8,2,1,9,8,7,5,6,5,7,5,7,1,4,4,5,
%T A200385 2,9,8,6,6,6,4,9,2,7,9,4,9,2,3,8,7,5,0,5,0,9,5,8,9,5,1,4,8,9,7,2,0,1,
%U A200385 4,2,1,1,5,1,1,1,9,9,6,0,0,9,1,6,7,2,0,6,1,1,7,0,3,4,3,6,7,0,0
%N A200385 Decimal expansion of least x>0 satisfying 3*x^2+2=tan(x).
%C A200385 See A200338 for a guide to related sequences. The Mathematica program includes a graph.
%e A200385 x=1.45114125891546019821987565757144529866649279...
%t A200385 a = 3; b = 0; c = 2;
%t A200385 f[x_] := a*x^2 + b*x + c; g[x_] := Tan[x]
%t A200385 Plot[{f[x], g[x]}, {x, -.1, Pi/2}, {AxesOrigin -> {0, 0}}]
%t A200385 r = x /. FindRoot[f[x] == g[x], {x, 1.4, 1.5}, WorkingPrecision -> 110]
%t A200385 RealDigits[r] (* A200385 *)
%Y A200385 Cf. A200338.
%K A200385 nonn,cons
%O A200385 1,2
%A A200385 _Clark Kimberling_, Nov 17 2011