The $n$th row of Pascal's triangle contains $n$ numbers, each of which is formatted in a field width of three characters; the entire row is then centered in a total field size of 40 characters.

Output:

                1                   
              1   1                 
            1   2   1               
          1   3   3   1             
        1   4   6   4   1           
      1   5  10  10   5   1         
    1   6  15  20  15   6   1       
  1   7  21  35  35  21   7   1     
1   8  28  56  70  56  28   8   1