Monday, September 14, 2009

Next in Line

What comes next in this sequence?

5 8 26 48 122 ?

5 comments:

  1. This comment has been removed by the author.

    ReplyDelete
  2. Ooops, make a mistake on the first guess. I'm saying it's 168.

    ReplyDelete
  3. Looks like there were some different patterns here.

    I was going for consecutive primes squared. Then you add or subtract 1 from the answer. So:
    2^2 + 1 = 5.
    3^2 - 1 = 8.
    5^2 + 1 = 26.
    7^2 - 1 = 48.
    11^2 + 1 = 122.
    13^2 - 1 = 168

    ReplyDelete

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