a(n,m) tabl head (triangle) for  A051142
 
    n\m           1            2              3           4           5         6         7        8        9   10
   
    1             1            0              0           0           0         0         0        0        0    0
    2            -4            1              0           0           0         0         0        0        0    0
    3            32          -12              1           0           0         0         0        0        0    0
    4          -384          176            -24           1           0         0         0        0        0    0
    5          6144        -3200            560         -40           1         0         0        0        0    0
    6       -122880        70144         -14400        1360         -60         1         0        0        0    0
    7       2949120     -1806336         415744      -47040        2800       -84         1        0        0    0
    8     -82575360     53526528      -13447168     1732864     -125440      5152      -112        1        0    0
    9    2642411520  -1795424256      483835904   -68898816     5746944   -290304      8736     -144        1    0
   10  -95126814720  67277684736   -19213516800  2964193280  -275788800  16197888   -604800    13920     -180    1