**Numbers n such that m(n!) = 2, where m(n) = mu(n) + mu(n+1) + mu(n+2).**

*8, 13, 14, 18, 19, 20, 25, 36, 38, 43, 48, 51, 52, 54, 60, 71, 74, 75, 78, 80, 87, 91, 92*

*2 seqfan posts*

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

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