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 A200646 #8 Feb 07 2025 16:44:07
%S A200646 1,5,2,7,9,9,1,4,9,7,9,1,3,9,9,9,9,1,7,1,7,1,1,3,4,3,8,4,8,6,1,4,5,5,
%T A200646 9,3,8,6,7,7,1,6,3,1,6,6,2,6,2,4,0,5,2,1,3,0,3,4,4,9,0,9,0,9,0,1,8,8,
%U A200646 7,9,9,3,0,3,3,9,8,1,7,9,9,3,7,4,9,7,0,5,9,2,0,4,5,3,4,3,2,8,3
%N A200646 Decimal expansion of least x>0 satisfying 10*x^2=tan(x).
%C A200646 See A200614 for a guide to related sequences. The Mathematica program includes a graph.
%H A200646 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>.
%e A200646 1.527991497913999917171134384861455938677...
%t A200646 a = 10; c = 0;
%t A200646 f[x_] := a*x^2 - c; g[x_] := Tan[x]
%t A200646 Plot[{f[x], g[x]}, {x, -.1, Pi/2}, {AxesOrigin -> {0, 0}}]
%t A200646 r = x /. FindRoot[f[x] == g[x], {x, 1.52, 1.53}, WorkingPrecision -> 110]
%t A200646 RealDigits[r] (* A200646 *)
%Y A200646 Cf. A200338.
%K A200646 nonn,cons
%O A200646 1,2
%A A200646 _Clark Kimberling_, Nov 20 2011