a(n,m) tabl head (triangle) for  A089511

 n\m      1      2        3        4          5          6            7            8            9         10
  
                           
   2      1      0        0        0          0          0            0            0            0          0
                               
   3     -1      3        0        0          0          0            0            0            0          0
                              
   4      1     -6        6        0          0          0            0            0            0          0
                           
   5     -1     27     -108      100          0          0            0            0            0          0
                           
   6      1    -36      216     -400        225          0            0            0            0          0
                           
   7     -1    135    -2160    10000     -16875       9261            0            0            0          0
                           
   8      1   -162     3240   -20000      50625     -55566        21952            0            0          0
                          
   9     -1    567   -27216   350000   -1771875    4084101     -4302592      1679616            0          0
                       
  10      1   -648    36288  -560000    3543750  -10890936     17210368    -13436928      4100625          0
                
  11     -1   2187  -279936  8400000  -95681250  514596726  -1445670912   2176782336  -1660753125  503284375