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A107588 as a simple table

na(n)
01
11
2-2
38
4-42
5258
6-1764
713070
8-103262
9860812
10-7516306
1168380986
12-645635800
136307334042
14-63602862362
15660771763808
16-7061440267362
1777524521343282
18-873398761544252
1910087973928531918
20-119358929179189278
211445596845096459108
22-17909930113246116338

[1,1,-2,8,-42,258,-1764,13070,-103262,860812,
 -7516306,68380986,-645635800,6307334042,
 -63602862362,660771763808,-7061440267362,
 77524521343282,-873398761544252,10087973928531918,
 -119358929179189278,1445596845096459108,
 -17909930113246116338]