def tri(t):
    #t = input('please input a num')
    L = []
    n = 0
    while n < t:

        if n >= 2:
            for j in range(n):
                if j >= 1:
                    L[j] = M[j] + M[j-1]
        n += 1
        L.append(1)
        M = []
        for x in L:
            M.append(x)
        print(L)