**a(n) = smallest number b such that b+n is the first number after b with phi(phi((b)) = phi(phi(b+n)).**

*1, 4, 45, 14, 58, 25, 68, 17, 183, 41, 27, 85, 274, 101, 875, 38, 184, 53, 478, 196, 848*

*1 seqfan posts*

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

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