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A123186 as a simple table

na(n)
11
21
31
4-2
5-2
6-2
70
80
90
10-8
11-8
12-8
131112
141112
151112
16-16336
17-16336
18-16336
1929760
2029760
2129760
22108608
23108608
24108608
25112587520
26112587520
27112587520
28-3584451200
29-3584451200
30-3584451200
3117790850560
3217790850560
3317790850560
34208254684160
35208254684160

[1,1,1,-2,-2,-2,0,0,0,-8,-8,-8,1112,1112,1112,
 -16336,-16336,-16336,29760,29760,29760,108608,
 108608,108608,112587520,112587520,112587520,
 -3584451200,-3584451200,-3584451200,17790850560,
 17790850560,17790850560,208254684160,208254684160]