Questions on sequence: "3-analogue of A035930"

[Richard Mathar]

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numbers with factorizations like these attract some interest in
the study of "riffs" and "rotes" -- terms that can be looked up
in the oeis -- in connection with the question of how much of
the natural order of the integers is "purely combinatorial",
but i'm about to be travelling and will have to save more
discussion for later.

jon

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