**a(n) = lambda(lambda(n)), where lambda(n) is the Carmichael lambda function (A002322).**

*1, 1, 1, 1, 2, 1, 2, 1, 2, 2, 4, 1, 2, 2, 2, 2, 4, 2, 6, 2, 2, 4, 10, 1, 4, 2, 6, 2, 6, 2, 4, 2, 4, 4*

*1 seqfan posts*

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

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