223260

Appears in sequences

• a(n) = p^2*(p-1), where p = prime(n).at n=17A135177
• A002326((k-1)/2) for composite numbers k from A141229.at n=9A140198
• Number of aperiodic necklaces (Lyndon words) with k<=8 black beads and n-k white beads.at n=29A277633
• Integers equal to the least common multiple of the set of numbers generated by all the differences between their consecutive divisors, taken in increasing order.at n=20A298045