Okay so I have some code that I *THINK* should work, do not bash me if it's miles off but it's getting too much recursion error. Could anyone hint me toward what it looks like i've cocked up on? 

2. void setup(){
3.   size(500,500);
4. }
5. void circles(int x, int y, int radius, int numb){
6.   int L=1;
7.   ellipse(x,y,radius,radius);
8.   if(numb>1){
9.     if(L==1){
10.       circles(x,y-radius/4,radius/2,numb);
11.       L++;
12.     }
13.     if(L==2){
14.       circles(x+radius/4,y,radius/2,numb);
15.       L++;
16.     } 
17.     if(L==3){
18.       circles(x,y+radius/4,radius/2,numb);
19.       L++;
20.     }
21.     if(L==4){
22.       circles(x-radius/8,y,radius/2,numb);
23.       L = 1;
24.     }
25.     numb=numb-1;   
26. 
    
27.   }
28.   
29. }
30. 
    
31. void draw(){
32.   circles(250,250,250,2);
33. 
    
34. }

So I've been set an assignment to write a recursive function to produce the following:

2. size(200,200);
3. int xpos = width/2;
4. int ypos = height/2;
5. int x = width;
6. int y = height;
7. ellipse(xpos,ypos,x,y);
8. ellipse(xpos,4*ypos/8,x/2,y/2);
9. ellipse(20*xpos/16,4*ypos/8,x/4,y/4);
10. ellipse(20*xpos/16,5*ypos/8,x/8,y/8);
11. ellipse(19*xpos/16,5*ypos/8,x/16,y/16);

We weren't given the above code we were just given an image, and I managed to get this code, so the general idea is that the next circle is half the radius of the last one, and goes in the top of the first one, next one on the right, then on the bottom then on the left.

So I understand how to use recursion, I had another task to do in which I created a fibonacci number generator using recursion. However I'm entirely stumped on how this is supposed to work with recursion. So I'm not asking for the answer I'm asking for a nudge in the right direction, if possible, as i've spent many hours contemplating about how to utilize recursion for this task...

Thanks in advanced!

edit:

latest development is:

2. void setup(){
3.   size(500,500);
4. }
5. void circles(int y, int radius, int numb){
6.   float tt = 126*numb/4.0;
7.   fill(tt);
8.   ellipse(width/2,y,radius,radius);
9.   if(numb>1){
10.     numb--;
11.     circles(y-radius/4,radius/2,numb);
12.   }
13.   
14. }
15. 
    
16. void draw(){
17.   circles(width/2,width,5);
18. 
    
19. }

but still struggling to get further, we'll see where this leads