**Number of ways to write 1/n as a difference of exactly 2 unit fractions.**

*0, 1, 1, 2, 1, 4, 1, 3, 2, 4, 1, 7, 1, 4, 4, 4, 1, 7, 1, 7, 4, 4, 1, 10, 2, 4, 3, 7, 1, 13, 1, 5, 4*

*3 seqfan posts*

Index of A-numbers in seqfan: by ascending order by month by frequency by keyword

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