Diminishing patterns

Hi

I have a sheet metal panel that I want to put a pattern of diminishing sized holes in. For example I have a 10mm hole at one and and a 1mm hole at the other end of the panel. I want to put for example 20 holes inbetween that dimininsh in size between 10mm down to 1mm.

Is there any way that this can be done or is there a macro that would help in this case.

Thanks

Steve

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