3628780

Appears in sequences

• Triangle T(n, k) = n*( (n-1)! - (k-1)! ), read by rows.at n=47A137259
• a(n) = n! - 2*n.at n=10A242569
• a(n) = 10*9*8*7*6*5*4*3*2*1 - 20*19*18*17*16*15*14*13*12*11 + 30*19*18*17*16*15*14*13*12*11 - ... + (up to the n-th term).at n=10A319893