def pascal(n, k):
    z = n +1
    p = [[0 for i in range(z)] for j in range(z)]
    for k in range(z):
        p[k][k] = 1
    for x in range(1, z):
        for y in range(0, z):
            p[x][y] = p[x-1][y-1] + p[x-1][y]
    return p