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19232Is there any prime?

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  • Sebastian Martin
    Feb 4, 2008
    • 0 Attachment
      Hello:

      Let C(n)=n!!+Sum[(Floor[n/i])!!,{i,1,n}]

      C(1)=2

      C(2)=5

      Which is the next prime number?

      for n>2 are all C(n) composite? or find a countraexample.

      There is some motive in order that they are composites?

      ( There is, seemingly, no pattern in the factors of the numbers C(n).)


      Sincerely

      Sebastián Martín Ruiz


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