15845760

Appears in sequences

• The triangle T_2(n, m), where T_2(n, m) is the number of surjective multi-valued functions from {1, 1, 2, 3, ..., n-1} to {1, 2, 3, ..., m} by rows (n >= 1, 1 <= m <= n).at n=52A172106
• Numbers n such that there exists an x!=n that makes {n,n,n,x} an amicable multiset.at n=10A259304