a(n,m) tabl head (triangle) for  A060058


                       
   n\m     0       1       2       3          4          5          6           7             8
  
                        
   0       1       0       0       0          0          0          0            0            0
                          
   1       1       1       0       0          0          0          0            0            0
                         
   2       1       5       5       0          0          0          0            0            0
                         
   3       1      14      61      61          0          0          0            0            0
                          
   4       1      30     331    1385       1385          0          0            0            0
                         
   5       1      55    1211   12284      50521      50521          0            0            0
                         
   6       1      91    3486   68060     663061    2702765    2702765            0            0
                        
   7       1     140    8526  281210    5162421   49164554  199360981    199360981            0
                    
   8       1     204   18522   94800  228862471  510964090 4798037791  19391512145  19391512145