a(m,k) tabl head (triangle) for  A093557, Knuth's Faulhaber triangle, denominator(A(m,k)
 

    m\k      0        1        2        3        4        5        6        7        8        9
 

    1        1        0        0        0        0        0        0        0        0        0
    
    2        1        1        0        0        0        0        0        0        0        0
    
    3        1        2        1        0        0        0        0        0        0        0
    
    4        1        3        3        1        0        0        0        0        0        0
    
    5        1        2        1        2        1        0        0        0        0        0
    
    6        1        1        2        1        1        1        0        0        0        0
    
    7        1        6       15        3       15       30        1        0        0        0
    
    8        1        1        3        3        3        1        1        1        0        0
    
    9        1        2        1        1        5        2        5       10        1        0
    
   10        1        3        2        7        1        3       42       21       21        1
  
   etc.