1469892

Appears in sequences

• Triangular array read by rows: a(n, k) = number of ordered factorizations of a "hook-type" number with n total prime factors and k distinct prime factors. "Hook-type" means that only one prime can have multiplicity > 1.at n=42A098348
• a(n) is the number of ordered partitions of {1, 1, 1, 2, 3, ..., n-2}.at n=8A172110