3628790

Appears in sequences

• a(n) = n! - n.at n=10A005096
• Triangular array read by rows: a(n,k) = Sum_{d|k} mu(d)*U(n,k/d)/n if k|n else 0, where U(n,k) = A047916(n,k) (1<=k<=n).at n=65A047919
• Triangle T(n, k) = n*( (n-1)! - (k-1)! ), read by rows.at n=45A137259
• Triangle T(n, k) = n*( (n-1)! - (k-1)! ), read by rows.at n=46A137259
• Number of cyclic permutations of [n] with symmetry order s=1.at n=10A325956