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A350525 as a simple table

na(n)
01
16
2-36
3360
4-4320
557024
6-816480
712737088
8-216950400
93985853184
10-77049957888
111524488905728
12-30107409053184
13576921511037952
14-9954313034508288
1594929987120648192
165615966537573179392
17-686220690340602003456
1857421269146260788903936

[1,6,-36,360,-4320,57024,-816480,12737088,
 -216950400,3985853184,-77049957888,1524488905728,
 -30107409053184,576921511037952,-9954313034508288,
 94929987120648192,5615966537573179392,
 -686220690340602003456,57421269146260788903936]