Digital Print Triangle

Title Description

Print pattern as
input n (1 <= n = < 10), special printing triangle

Entry

4

Export

1  2  3  4
3  5  7
8  12
20

Sample input  Copy

4

n=int(input())
list_s=[]
for i in range(1,n+1):
    list_s.append(i)
z = 1
for i in range(n):
    if i == 0  :
        for j in range(1,n):
            print("%-3d"%j,end="")
        print(j+1)
    else:
        for j in range(n-i):
            li2 = list_s[z - 1] + list_s[z]
            if j==n-i-1:
                print(li2)
            else:
                print("%-3d"%li2,end="")
            list_s.append(li2)
            z + = 1
        z + = 1