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 A199467 #9 Feb 08 2025 09:59:54
%S A199467 2,2,7,8,8,6,2,6,6,0,0,7,5,8,2,8,3,1,2,6,9,9,9,5,1,1,0,4,5,6,1,8,8,8,
%T A199467 6,2,8,8,1,8,2,7,4,7,4,0,7,3,9,7,7,6,5,1,6,5,2,5,5,8,5,5,2,9,2,4,8,3,
%U A199467 4,4,4,6,4,7,0,1,8,3,9,1,8,6,2,5,6,7,8,1,3,4,0,5,8,0,1,4,6,5,1
%N A199467 Decimal expansion of greatest x satisfying x=3*sin(x).
%C A199467 See A199429 for a guide to related sequences. The Mathematica program includes a graph.
%H A199467 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>.
%e A199467 2.2788626600758283126999511045618886288...
%t A199467 a = 1; b = -3; c = 0;
%t A199467 f[x_] := a*x^2 + b*x*Sin[x]; g[x_] := c*Cos[x]
%t A199467 Plot[{f[x], g[x]}, {x, -Pi, Pi}, {AxesOrigin -> {0, 0}}]
%t A199467 r = x /. FindRoot[f[x] == g[x], {x, 2.27, 2.28}, WorkingPrecision -> 110]
%t A199467 RealDigits[r] (* A199467 *)
%Y A199467 Cf. A199429.
%K A199467 nonn,cons
%O A199467 1,1
%A A199467 _Clark Kimberling_, Nov 07 2011