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A108096 as a simple table

na(n)
01
112
2-60
3768
4-11004
5178200
6-3093504
756265216
8-1058194428
920410970124
10-401553531000
118026398749952
12-162541338390528
133327702330562584
14-68761528402925568
151432192515405350400
16-30037109244686774268
17633790586271852392472
18-13444940755220756447292
19286577646482211381212928

[1,12,-60,768,-11004,178200,-3093504,56265216,
 -1058194428,20410970124,-401553531000,
 8026398749952,-162541338390528,3327702330562584,
 -68761528402925568,1432192515405350400,
 -30037109244686774268,633790586271852392472,
 -13444940755220756447292,286577646482211381212928]