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heeeelp math

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For each positive integer n, let Hn=1/1 + 1/2 +⋯+ 1/n . If ∑ (up)∞ (base)(n=4) 1/n*Hn*H(n-1)= a/b for relatively prime positive integers a and b, find a+b.

  • heeeelp math - ,

    imageshack.us/photo/my-images/17/codecogseqn1.gif/

    Did you mean this?

  • heeeelp math - ,

    yes

  • heeeelp math - ,

    Except for the equals sign right?

  • heeeelp math - ,

    17

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