38517

Appears in sequences

• Numbers k such that 5*R_k + 2 is prime, where R_k = 11...1 is the repunit (A002275) of length k.at n=15A099417
• Number of length n 1..(1+1) arrays with every leading partial sum divisible by 2, 3 or 5.at n=35A254820
• Number of rooted full binary trees with n internal nodes, up to their multiset of subtree sizes.at n=16A382440