Probably Art # 340: Circle

11 circles drawn in 2 shade(s) chosen from 5 unique size(s).

$$ s = .00056140, \; $$ $$ | \lbrace \theta \rbrace | = 2, $$ $$ | \lbrace r \rbrace | = 5,$$ $$ r_0 = 0.0500,$$ $$ R = 3.00, $$ $$r \sim \beta(0.584, 1.592), $$ $$\theta \sim \beta(1.919, 0.670). $$