840000

Appears in sequences

• Number of ways to form k labeled groups, each with a distinct leader, using n people. Triangle T(n,k) = n!*k^(n-k)/(n-k)! for 1 <= k <= n.at n=32A199673
• Triangle, read by rows, where T(n,k) = k!*C(n, k)*5^(n-k) for n>=0, k=0..n.at n=41A218016
• Irregular triangle read by rows where T(n,k) is the number of independent sets of size k in the n-halved cube graph.at n=38A355226
• Expansion of e.g.f. (1/x) * Series_Reversion( x/(x + exp(x^2)) ).at n=7A370875