GF
This image shows 9,000 circles. For each k=1,2,3,...,9000 the center of the k-th circle is (X(k), Y(k)) and the radius of the k-th circle is R(k), where X(k)=cos(14πk/9000)(1-(3/4)(sin(20πk/9000))-(1/4)(cos(60πk/9000))), Y(k)=sin(14πk/9000)(1-(3/4)(sin(20πk/9000))-(1/4)(cos(60πk/9000))), R(k)=(1/120)+(1/18)(sin(60πk/9000))+(1/18)(sin(160πk/9000)).