31660
domain: N
Appears in sequences
- Interprimes which are of the form s*prime, s=20.at n=29A075295
- Number of ways to place 4 nonattacking wazirs on a 4 X n board.at n=8A172230
- Numbers n such that n^9+9 and n^9-9 are prime.at n=26A239505
- Numbers k such that sigma(k) = sigma(k - d(k)).at n=31A277273
- Sum of the fourth largest parts in the partitions of n into 7 parts.at n=47A308930