
An Archimedes spiral displaying 10000 numbers [Une spirale d'Archimède montrant 10000 nombres entiers].
rho = srqt(N)
teta = 2.pi.sqrt(N)
The radius of the N-th sphere is proportional
to an ascending function of the number of divisors of N.
The number 0 is at the center and is not displayed.
The number 1 and the prime numbers are visualized by means of white spheres
(a smaller one for the number 1).