CM> "formula" could also be used to generate ... 4294967296 random numbers.
  I will not pretend to understand, even if I could recall it,
  but in the science echo there was a thread about random
  numbers.   The conclusion seemed to be that random numbers,
  given computer digital architecture, will have repetitions
  sooner than the number suggests.   Don't ask, I can't remember.
  If you have access to it, the math gurus there can probably redo
  the logic.
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