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This Number Sequence is Driving me MAD!

  1. Jul 15, 2004 #1

    I saw this problem in a kid's math textbook, and I still can't figure out what the answer is supposed to be. I can't see the logic. Pls. lend me your thoughts on this.
  2. jcsd
  3. Jul 16, 2004 #2
    Primes minus one.

    1, 2, 4, 6, 10, 12, 16 ,18, ...
  4. Jul 16, 2004 #3
    thanks a lot gazzo!!! I owe you one.
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