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harmonic n.  and  interprime n.

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First numbers that belong to both sets:

6, 270, 2970, 32760, 55860, 167400, 753480, 950976, 1539720, 2229500, 2457000, 2845800, 8872200, 15495480, 18154500, 52141320, 56511000, 71253000.