3628820

Appears in sequences

• Triangle sequence:t(n,m)=(2 n - Binomial[n, m] + m! + (-m + n)!).at n=55A155169
• a(n) = 10*9*8*7*6*5*4*3*2*1 + 20*19*18*17*16*15*14*13*12*11 + ... + (up to the n-th term).at n=10A319874