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Thread: Summation

  1. September 15th 2010, 11:02 AM #1
    tarheelborn
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    Summation

    Is ([(n+1)(n+2)(n+3)]/6 the formula for some summation? Thanks.
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  2. September 15th 2010, 11:17 AM #2
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    Quote Originally Posted by tarheelborn View Post
    Is ([(n+1)(n+2)(n+3)]/6 the formula for some summation? Thanks.
    Tetrahedral numbers. (Can be seen as summation of triangle numbers.)

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