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iban n.  and  tetrahedral n.

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(max 15 digits)

First numbers that belong to both sets:

1, 4, 10, 20, 120, 220, 1140, 1771, 2024, 2300, 7140, 7770, 12341, 22100, 27720, 70300, 102340, 147440, 171700, 310124, 410040.