a(1) = 8; a(n) = least k with d(k) = a(n-1), where d(k) is the number of divisors of k.

A037025

a(1) = 8; a(n) = least k with d(k) = a(n-1), where d(k) is the number of divisors of k.

Terms

    a(0) =8a(1) =24a(2) =360a(3) =3603600

External references