def getList(m,n):
    '''
      m 行数
      n 列数
      返回的是m行n列的二维数组，默认值为0
    '''
    ma = [ [0 for i in range(n)] for i in range(m) ]
    return ma
def printList(arr):
    for i in arr:
        for j in i:
            print('%3d' %(j),end='')
        print();
n=int(input())
arr = getList(n,n)
k = 1
for i in range(n-1,-1,-1):
    for j in range(n-1,-1,-1):
        arr[i][j] = k
        k += 1
printList(arr)
/**************************************************************
	Problem: 1188
	User: admin
	Language: Python
	Result: Accepted
	Time:98 ms
	Memory:34480 kb
****************************************************************/