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 A200698 #8 Feb 07 2025 16:44:07
%S A200698 6,4,4,9,2,2,7,9,6,5,0,0,9,3,2,8,2,0,0,2,6,4,2,6,7,1,8,1,2,0,3,2,5,5,
%T A200698 5,5,6,5,6,9,5,0,5,6,6,6,3,7,4,5,2,3,4,8,0,1,4,4,4,6,2,6,9,4,7,9,7,2,
%U A200698 8,1,4,3,6,1,3,8,8,2,7,6,7,4,9,0,8,1,9,6,4,9,8,9,5,0,6,7,5,6,9
%N A200698 Decimal expansion of least x>0 satisfying 2-3*x^2=tan(x).
%C A200698 See A200614 for a guide to related sequences. The Mathematica program includes a graph.
%H A200698 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>.
%e A200698 0.6449227965009328200264267181203255556569505666...
%t A200698 a = -3; c = 2;
%t A200698 f[x_] := a*x^2 + c; g[x_] := Tan[x]
%t A200698 Plot[{f[x], g[x]}, {x, -.1, Pi/2}, {AxesOrigin -> {0, 0}}]
%t A200698 r = x /. FindRoot[f[x] == g[x], {x, .6, .7}, WorkingPrecision -> 110]
%t A200698 RealDigits[r] (* A200698 *)
%Y A200698 Cf. A200338.
%K A200698 nonn,cons
%O A200698 0,1
%A A200698 _Clark Kimberling_, Nov 21 2011