[PyMOL] Remove/keep every n_th (dummy) atom of a selection

[belzebub <bel...@gm...>]

Hi guys,

I'm quite new to Pymol and facing some hurdle that costs a lot of time.
Maybe someone of you knows a quick solution.

I have a selection (sele) of dummy atoms and need to reduce the number
of these atoms to about 15-20. To be more precise, I want to

- keep 1 atom
- remove e.g. the next 5 atoms
- keep 1 atom
- remove e.g. the next 5 atoms
- and so on

Is there an easy way to accomplish that directly on the Pymol command line?

Many thanks in advance!

Fred