a(1) = 3; thereafter a(n+1) = least k with a(n) divisors.

A009287

a(1) = 3; thereafter a(n+1) = least k with a(n) divisors.

Terms

    a(0) =3a(1) =4a(2) =6a(3) =12a(4) =60a(5) =5040a(6) =293318625600

External references