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A277510 as a simple table

na(n)
0-1
12
2-2
36
48
5170
61872
729246
8519808
910698642
10248787200
116458737142
12185138721792
135808233422394
14197952647108608
157283047491096750
16287705410381709312
1712145740050403520034
18545696709922799419392
1925998534614835587104742
201309210567403228200960000

[-1,2,-2,6,8,170,1872,29246,519808,10698642,
 248787200,6458737142,185138721792,5808233422394,
 197952647108608,7283047491096750,
 287705410381709312,12145740050403520034,
 545696709922799419392,25998534614835587104742,
 1309210567403228200960000]