40. Write a code to generate a half pyramid pattern using numbers.

Write a code to generate a half pyramid pattern using numbers.

Input Description:
Given an integer R indicates number of rows.

Where 1<=R<=100.

Output Description:
Print the number half pyramid pattern with the size R.

Sample Input :
5
Sample Output :
1
24
135
2468
13579


def pattern(n):
    o = ['1']
    e = ['2']
    for i in range(1, n+1):
        if i % 2 == 1:
            print(''.join(o))
        else:
            print(''.join(e))
        o.append(str(int(o[-1]) + 2))
        e.append(str(int(e[-1]) + 2))
            
n = int(input())
pattern(n)