Packing circle of different radius

It is a bit difficult for me to understand what youbare after. If you dont want to program and if you learn nothing on all the articles on circle packing seems to be a bit strange …
Some advices
Try to explain what you are after in term of events. It will help understand which algorithm you are after.
After that it will be possible to write an algorithm or find one existing

I understand you want to put a circle in a circle then a next one etc … is the next close from others circles does it touches one or 2 circles … Explain the logic.

Is something like that near what you want

See that also,