404415

Appears in sequences

• Number of n X 3 0..2 arrays with rows and antidiagonals unimodal and columns nondecreasing.at n=11A223913
• Numbers n such that sigma(n) divides the sum of the numbers x not coprime to n, with x<=n.at n=12A239208
• a(n) is the least number k such that A246600(k) = n, and -1 if no such k exists.at n=22A359081