Circle Packing - Similar to Rhino Plugin

Hello,

I must say I'm very new to grasshopper. I am wondering if there is a grasshopper definition similar to the Circle packing plugin for rhino.
I am trying to create a circle packing where the larger circles are in the center and the smaller ones furthest away from the center.
I would like to know if there is a possibility to control the size of the circle.

Could someone help me how to do it?

Thank you

P.