n = int(input()) a = [ [0]*n for x in range(n)] for i in range(n): for j in range(n): if i==j: a[i][j] = i + 1 # j+1 elif i>j: a[i][j] = a[i-1][j] #向上一行取数 else: a[i][j] = a[i][j-1] #向左取数 for row in a: print( *row )