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What the following number Sequence

  1. Aug 30, 2009 #1

    1244
    114448
    12818176
    205090816
    _____________

    what the following number
     
  2. jcsd
  3. Aug 30, 2009 #2
    Re: Sequence

    1729
     
  4. Aug 30, 2009 #3
    Re: Sequence

    [tex]2^2 \cdot 311 \cdot 1[/tex]

    [tex]2^2 \cdot 311 \cdot 23 \cdot 2^2[/tex]

    [tex]2^2 \cdot 311 \cdot 23 \cdot 7 \cdot 2^2 \cdot 2^4[/tex]

    [tex]2^2 \cdot 311 \cdot 23 \cdot 7 \cdot 2^2 \cdot 2^4 \cdot 2^4[/tex]
     
    Last edited: Aug 31, 2009
  5. Aug 31, 2009 #4
    Re: Sequence

    where the Responses
     
  6. Aug 31, 2009 #5
    Re: Sequence


    ....
     
  7. Aug 31, 2009 #6
    Re: Sequence

    And why do you think it is 1729?
     
  8. Aug 31, 2009 #7
    Re: Sequence

    Obviously it's the fifth value of the function f:N->N which is 0 everywhere except for 1 through 5, which have the values (resp.) 1244, 114448, 12818176, 205090816 and 1729.
     
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