731731

Appears in sequences

• Number of ways of placing n labeled balls into 3 indistinguishable boxes with at least 2 balls in each box.at n=8A000478
• Triangle T(n,k) of associated Stirling numbers of second kind, n >= 2, 1 <= k <= floor(n/2).at n=44A008299
• Half the number of nXnXn triangular binary arrays with no element equal to a strict majority of its neighbors.at n=6A183283