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Not too much (Posted on 2015-02-20)

What is the sum of the reciprocals of all the nonzero
triangular numbers?

No Solution Yet Submitted by Ady TZIDON

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re(3): Is this valid? no ! - partial spoiler

Comment 8 of 8 |

I have erased- my erroneous text

The sum is 2.

Posted by Ady TZIDON on 2015-02-21 14:15:13

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