**a(1) = 2; a(n) is the smallest prime > a(n-1) such that a(n) + a(n-1) is a fourth power.**

*2, 79, 1217, 2879, 7121, 152879, 178897, 12781103, 24233953, 25553183*

*2 seqfan posts*

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

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