Objects responding to scale of another.

Hi there,

I am just learning grasshopper and am currently looking for a way of model objects based on a response to an object that is already present. For example i have a sphere and i am wanting another sphere to intersect it, however, i would like the second sphere to be a certain scale in response to the size of the original one. so if the original sphere has a radius of between 1 - 2cm then the next sphere to intersect it would be 4cm radius. if the original radius of the sphere is between 2 - 3cm then another size sphere would be the response that and so on.

I would like to end up with a large cluster of intersecting spheres similar to the shape of a wasp nest as attached.

Any help on how i could script this or if you have any other ideas how i could script such a complex shape of a wasp nest would be appreciated.

Many thanks!

G