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 A200423 #6 Feb 07 2025 16:44:07
%S A200423 1,5,1,6,0,8,1,4,9,5,9,5,8,7,8,3,8,3,3,9,1,4,0,4,1,5,5,7,3,1,0,8,6,4,
%T A200423 1,7,0,7,6,3,2,8,4,3,9,3,7,1,5,5,8,7,3,5,7,9,3,4,3,4,1,9,6,7,7,6,1,2,
%U A200423 8,3,8,7,8,0,9,8,1,4,7,5,5,3,0,3,7,8,0,0,7,7,1,5,0,0,9,8,1,3,7
%N A200423 Decimal expansion of least x>0 satisfying 4*x^2+4*x+3=tan(x).
%C A200423 See A200338 for a guide to related sequences. The Mathematica program includes a graph.
%e A200423 x=1.5160814959587838339140415573108641707632843...
%t A200423 a = 4; b = 4; c = 3;
%t A200423 f[x_] := a*x^2 + b*x + c; g[x_] := Tan[x]
%t A200423 Plot[{f[x], g[x]}, {x, -.1, Pi/2}, {AxesOrigin -> {0, 0}}]
%t A200423 r = x /. FindRoot[f[x] == g[x], {x, 1.51, 1.52}, WorkingPrecision -> 110]
%t A200423 RealDigits[r] (* A200423 *)
%Y A200423 Cf. A200338.
%K A200423 nonn,cons
%O A200423 1,2
%A A200423 _Clark Kimberling_, Nov 18 2011