Consider numbers which are denominators of at least one reduced rational sum{k=1 to m} 1/k^n, taken over all positive integers m and n (a sequence not yet in the database). Sequence gives denominators which occur more than once.

A094515

Consider numbers which are denominators of at least one reduced rational sum{k=1 to m} 1/k^n, taken over all positive integers m and n (a sequence not yet in the database). Sequence gives denominators which occur more than once.