#        1
#      1 2 1
#    1 2 3 2 1
#  1 2 3 4 3 2 1
#1 2 3 4 5 4 3 2 1

user_rows = int( input() )

for row in range(1, user_rows + 1):
    #Front side space
    print( " " * (2 * (user_rows - row)), end = '' )
    #Ascending order Pattern
    print( " ".join( str(icounter) for icounter in range(1, row + 1)), end = '' )
    #Middle space between both ascending and descending pattern
    if not row == 1:
        print(" ", end = '')
    #Descending order Pattern
    print( " ".join( str(icounter) for icounter in range(row-1, 0, -1)), end = '' )
    #Next line at all lines except last one
    if not row == user_rows:
        print("")