Circle offsets taper with tangential relationships to midpoints

Hey Everyone, 

I'll try my best to explain what is going on, but I am guessing that those who know Grasshopper will get a better idea of what is going by looking at the definition.

I'm working through a definition this that creates larger circle (circle A) offsets.  Each larger circle has a controlled division applied.  A controllable circle (circle B) geometry is applied to the center points of the division on the larger circle.  Every other row is rotated to produce a pattern.  At the point when the diameter of circle B creates a collision with an adjacent circle, it is scaled down.  What is produced is a alternating offset circle pattern that scales from a larger circle b on the perimeter to a smaller circle b in the middle.  

Eventually, I will need to change the elevation of each row and extrude the circle Bs, but for now I am looking for way to clean this definition up.    I have done all this manually as a start and just now have to decided working through grasshopper so I  can have more control of this.  The attached image is a manual drawing.