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)
for i in range(0,n):
    k = i
    for j in range(0,n):
        arr[i][j] = k + 1
        if i + j >= n - 1:
          k -= 1
        else:
          k += 1
printList(arr)

/**************************************************************
	Problem: 1193
	User: admin
	Language: Python
	Result: Accepted
	Time:109 ms
	Memory:34480 kb
****************************************************************/