a(n,m) tabl head (triangle) for  A090215 (generalized Legendre-Stirling, l=4)


  n\m         1              2              3              4            5         6        7        8

  1           1              0              0              0            0         0        0        0
                        
  2          24              1              0              0            0         0        0        0
                        
  3         576            144              1              0            0         0        0        0
                        
  4       13824          17856            504              1            0         0        0        0
                        
  5      331776        2156544         199296           1344            1         0        0        0
                        
  6     7962624      259117056       73903104        1328256         3024         1        0        0
                      
  7   191102976    31102009344    26864234496     1189638144      6408576      6048        1        0
                
  8  4586471424  3732432224256  9702226427904  1026160275456  11956045824  24697728    11088        1