%N The circle curvature (rounded down) inscribed in the area related to critical point of Mandelbrot set at C = 1/4.
%C Inspired by "The dark side of the Mandelbrot set".
%C Consider the case of C = 1/4, 0 <= x <= 1/2, draw the inscribed circles in the area between parabola curve, y = x^2 + 1/4 and the line y = x. The circle radii are found with the "tan-tan-tan" function from AutoCAD program. See details and illustration in the links.
%H Burkard Polster, <a href="https://www.youtube.com/watch?v=9gk_8mQuerg">The dark side of the Mandelbrot set</a>, Mathologer video (2016).
%H Kival Ngaokrajang, <a href="/A272721/a272721.pdf">Illustration of initial terms</a>
%A _Kival Ngaokrajang_, May 05 2016