143220

Appears in sequences

• Integers which have more than one coprime factorization into nonprime powers which sum to the same number.at n=13A072940
• Numbers with prime factorization pqrstu^2.at n=13A189985
• Numbers k such that Euler phi(Dedekind psi(k)) > k.at n=9A196200
• a(n) = lcm(n,p1,p2,...,pk) for such a partition of n which maximizes this value among all partitions {p1+p2+...pk} of n.at n=31A225646
• a(n) = a(n-1)*(1 + a(n-1)/a(n-3)), with a(0) = a(1) = a(2) = 1.at n=7A250309