a(n,m) tabl head (triangle) for  A090210 (triangle of generalized Bell-numbers)


   n\m      1           2               3                 4               5               6        7      8     9    

                          
     0      1           0               0                 0               0               0        0      0     0      
                         
     1      1           1               0                 0               0               0        0      0     0      
                          
     2      2           1               1                 0               0               0        0      0     0      
                         
     3      5           7               1                 1               0               0        0      0     0      
                          
     4     15          87              34                 1               1               0        0      0     0      
                        
     5     52        1657            2971               209               1               1        0      0     0      
                           
     6    203       43833          513559            163121             1546              1        1      0     0      
                      
     7    877     1515903       149670844         326922081         12962661          13327        1      1     0      
              
     8   4140    65766991     66653198353     1346634725665     363303011071     1395857215   130922      1     1