 birthdays in a year of n=2^24 days. There are
   choices of m and n for which lags &gt;1000 will also
   fail the test. A reasonable precaution is to always
   combine a 2-lag Fibonacci or SWB generator with
   another kind of generator, unless the generator uses
   *, for which a very satisfactory sequence of odd
   32-bit integers results.
</i></p><p>
<i>   The classical Fibonacci sequence mod 2^32 from FIB
   fails several tests. It is not suitable for use by
   itself, but is quite suitable for combini