a(n) is the smallest integer such that all its prime factors are <= its n-th root, and such that the equivalent limitation holds also for a(n)-1.

A122463

a(n) is the smallest integer such that all its prime factors are <= its n-th root, and such that the equivalent limitation holds also for a(n)-1.

Terms

    a(0) =3a(1) =9a(2) =2401a(3) =2401a(4) =5909761a(5) =1611308700a(6) =421138799640

External references