W. Lang , Sep 18 2008

a(n,m) tabl head (triangle) for A144285 (S2hat(-4))


   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              36            4          1         0        0      0     0    0    0   0

   4             504           52          4         1        0      0     0    0    0   0

   5            9576          648         52         4        1      0     0    0    0   0

   6          229824        12888        712        52        4      1     0    0    0   0

   7         6664896       286272      13464       712       52      4     1    0    0   0

   8       226606464      8182944     299520     13720      712     52     4    1    0   0

   9      8837652096    266366016    8455392    301824    13720    712    52    4    1   0

  10    388856692224  10191545280  273091392   8508384   302848  13720   712   52    4   1
  .
  .
  .


 The row sums give A144286: [1,5,41,561,10281,243481,6965401,235103417,9112789817,399330154617,...].

 The first three columns are A008546, A144339, A144340.

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