996480

Appears in sequences

• Triangle of numbers T(n,k) = T(n-1,k-1) + ((n+k-1)/k)*T(n-1,k), n >= 1, 1 <= k <= n, with T(n,1) = n!, T(n,n) = 1; read from right to left.at n=53A059369
• a(n) = (n-1)! + ((n+1)/2)*a(n-1), a(1)=0.at n=8A059371
• Triangle T(n, k) read by rows. T(n, k) is the number of lists of k unlabeled permutations whose total length is n.at n=57A090238
• Number of arrangements of n non-attacking bishops on an n X n board such that every square of the board is controlled by at least one bishop.at n=9A122749
• Number of n-step excursions on the 6-dimensional f.c.c. lattice.at n=5A271651