72283
domain: N
Appears in sequences
- Products p^3 or p^2*q, where {p,q} are consecutive primes.at n=37A033477
- Numbers k such that (sigma(k)-k) - Sum_{p|k} p^2 = -1.at n=6A070225
- a(n) = A105658(n)/k, where k=n if n is odd, else k=n/2.at n=66A105769
- Nonsquarefree "year numbers" (numbers n such that phi(n) = 2*phi(sigma(n)): A137815).at n=5A137816
- a(n) = (p_n)^2 * p_{n+1}, where p_n is the n-th prime, A000040(n).at n=12A251720
- Greatest positive integer whose weakly increasing prime indices have zero-based weighted sum (A359674) equal to n.at n=40A359757
- Numbers k such that sigma(k) = psi(k) + tau(k)^2 + omega(k)^3.at n=22A392520