5-Sondow numbers: numbers k such that p^s divides k/p + 5 for every prime power divisor p^s of k.

A346553

5-Sondow numbers: numbers k such that p^s divides k/p + 5 for every prime power divisor p^s of k.

Terms

    a(0) =1a(1) =2a(2) =3a(3) =14a(4) =66a(5) =1974a(6) =307146a(7) =3270666a(8) =42404405538a(9) =318501038226

External references