n = int(input()) def pyramid_up(n): for i in range(1,n+1): print(' '*(n-i),end="") print( "".join( [str(x) for x in range(1,i+1)] ) ,end="") print( "".join( [str(x) for x in range(i-1,0,-1)] ) ) def pyramid_down(m): for i in range(1,m+1): print(' ' * (i), end="") print("".join([str(x) for x in range(1, m-i+2)]), end="") print( "".join( [str(x) for x in range(m-i,0,-1)] ) ) pyramid_up(n) pyramid_down(n-1)