I've never heard of this. Sounds like a fun little relation. Keep in mind, though, that if you generate this list in base 10, you will get a different list than in any other base, making these somewhat less fundamental than perhaps other numbers in number theory. For example, in base 2, , and , so 7 is a Rivelli Number in base 2.

If you can enumerate a list of the first 5 or 10, you can check your list against AT&T's The On-Line Encyclopedia of Integer Sequences If they have never heard of it, they take submissions! You could be the official discoverer of Rivelli Numbers!