References to A069586

Smallest prime power p^k (k>=2) such that there is a difference of exactly n between p^k and some other prime power q^l (l >= 2); or 0 if no such q^l exists.
8, 25, 125, 4, 4, 0, 9, 8, 16, 2187, 16, 4, 243, 0, 49, 9, 8, 9, 8, 0, 4, 27, 4, 8, 0, 0, 0, 4

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