388245

Appears in sequences

• Squarefree numbers k such that phi(k) = phi(k+1).at n=18A063739
• Numbers k such that A173557(k) = A173557(k+1).at n=32A333874
• Numbers k such that both k and k+1 are squarefree and phi(k) = phi(k+1), where phi is the Euler totient function (A000010).at n=5A333875