a(n) is the start of the least run of exactly n consecutive odd numbers that are A000120-perfect numbers (A175522).

A360640

a(n) is the start of the least run of exactly n consecutive odd numbers that are A000120-perfect numbers (A175522).

Terms

    a(0) =25a(1) =123a(2) =31803a(3) =8019811a(4) =130194395

External references