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oban n.  and  super Niven n.

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First numbers that belong to both sets:

3, 5, 6, 7, 8, 9, 10, 12, 20, 30, 36, 50, 60, 70, 80, 90, 300, 306, 330, 360, 500, 510, 550, 600, 630, 660, 700, 770, 800, 880, 900, 990.