[Geof]

Interesting question, why are we not allowed to ask why?

I had the same question for a project that did not go anywhere. I never did write anything but I figured it should be possible to write a macro for a pseudo random number generator. I cannot recall the exact details but I think it is a case of taking successive square roots of a large prime number and truncating each result to the number of digits you need for the random numbers.

My application was based on an idea for doing large brushed stainless steel or aluminum panels by having an abrasive disc wander around them randomly on a large gantry router. If the same original prime number is used in the generator it generates the same sequence of random numbers so the pattern would be random on any one sheet but identical between sheets.