Determining Unit Fractions From Pythagorean Triples

It has been known since ancient Egyptian times that fractions of the form 2/n, where n is a natural number > 3, can be expressed as a sum of two different unit fractions (unit fractions have 1 in the numerator and a positive integer in the denominator) (https://en.wikipedia.org/wiki/Rhind_Mathematical_Papyrus_2/n_table).

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