39093

Appears in sequences

• Numbers n such that n and pi(n) (A000720) are palindromic.at n=28A103357
• Let k = A228058(n). a(n) is the number of ways to partition the divisors of k into complementary subsets x and y so that the (k-Sum(x)) and (k-Sum(y)) are coprime.at n=83A325809
• E.g.f.: -log(1 - x - Sum_{k>=2} prime(k-1) * x^k / k!).at n=6A343623