Probably Art # 81: Circle

32 circles drawn in 1 shade(s) chosen from 4 unique size(s).

$$ s = .00386595, \; $$ $$ | \lbrace \theta \rbrace | = 1, $$ $$ | \lbrace r \rbrace | = 4,$$ $$ r_0 = 0.0500,$$ $$ R = 2.00, $$ $$r \sim \beta(0.963, 1.134), $$ $$\theta \sim \beta(1.000, 1.000). $$