Call a fraction a "unit fraction" if it can be written as 1/n, where n is a positive integer.

How many more ways can the unit fraction 1/n be written as a sum of two (possibly equivalent) unit fractions than as a difference of two unit fractions?

(In reply to greater detail by Dennis)

Thanks.  That explains quite clearly what I was seeing and couldn't properly explain to Gamer but he understood what I was trying to demonstrate.

Edited on October 17, 2006, 7:38 pm

Posted by brianjn on 2006-10-17 19:37:31