a(n,m) tabl head (triangle) for  A051151
 
    n\m             1              2               3            4              5          6         7      8      9    10
 
    1               1              0               0            0              0          0         0      0      0     0
    
    2              -6              1               0            0              0          0         0      0      0     0
    
    3              72            -18               1            0              0          0         0      0      0     0
    
    4           -1296            396             -36            1              0          0         0      0      0     0
    
    5           31104         -10800            1260          -60              1          0         0      0      0     0
    
    6         -933120         355104          -48600         3060            -90          1         0      0      0     0
    
    7        33592320      -13716864         2104704      -158760           6300       -126         1      0      0     0
    
    8     -1410877440      609700608      -102114432      8772624        -423360      11592      -168      1      0     0
     
    9     67722117120   -30676506624      5511193344   -523200384       29093904    -979776     19656   -216      1     0
   
   10  -3656994324480  1724253474816   -328280947200  33764014080    -2094271200   82001808  -2041200  31320   -270     1


   etc.