Probably Art # 326: Polygon

28-sided polygon with vertices chosen from 13 distance(s) from the origin.

$$ s = .00053581, \; $$ $$ | \lbrace \theta \rbrace | = 28, $$ $$ | \lbrace r \rbrace | = 13,$$ $$ r_0 = 0.2500,$$ $$ R = 1.00, $$ $$r \sim \beta(0.492, 0.379), $$ $$\theta \sim \beta(1.000, 1.000). $$