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 A200347 #7 Feb 07 2025 16:44:06
%S A200347 1,4,2,6,6,3,5,1,0,9,9,3,3,0,4,3,8,0,9,0,1,4,9,2,5,7,1,1,4,9,6,1,0,4,
%T A200347 3,4,4,2,4,9,7,2,8,1,7,6,8,0,7,7,5,4,0,6,1,2,7,6,8,6,2,5,9,1,3,8,4,4,
%U A200347 1,5,5,0,6,0,1,5,6,7,5,3,8,3,1,8,9,4,7,0,2,4,8,5,1,8,9,8,7,9,1
%N A200347 Decimal expansion of least x>0 satisfying x^2+2x+2=tan(x).
%C A200347 See A200338 for a guide to related sequences. The Mathematica program includes a graph.
%e A200347 x=1.4266351099330438090149257114961043442497281...
%t A200347 a = 1; b = 2; c = 2;
%t A200347 f[x_] := a*x^2 + b*x + c; g[x_] := Tan[x]
%t A200347 Plot[{f[x], g[x]}, {x, -.1, Pi/2}, {AxesOrigin -> {0, 0}}]
%t A200347 r = x /. FindRoot[f[x] == g[x], {x, 1.4, 1.5}, WorkingPrecision -> 110]
%t A200347 RealDigits[r] (* A200347 *)
%Y A200347 Cf. A200338.
%K A200347 nonn,cons
%O A200347 1,2
%A A200347 _Clark Kimberling_, Nov 16 2011