def u(n):
    U = [None] * (n+1)
    U[0] = (1,0)
    for k in range(1,n+1):
        S = U[k-1][1] + k * U[k-1][0]
        U[k] = (S/k, S)
    return U[n][0]

for n in range(20):
    print (u(n))