**Fully multiplicative with a(p(k)) = p(k+1) for k-th prime p(k).**

*1, 3, 5, 9, 7, 15, 11, 27, 25, 21, 13, 45, 17, 33, 35, 81, 19, 75, 23, 63, 55, 39, 29, 135*

*3 seqfan posts*

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

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