n=3
c=7

def setup():
    background(0)
    size(600,600)

def draw():
    global a,n
    a = n * 137.5
    r = c * sqrt(n)
    x = r * cos(a) + width/2
    y = r * sin(a) + height/2
    fill(255)
    ellipse(x,y,9,9)
    n = n+1