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A123670 as a simple table

na(n)
11
24
3-2
427
5-27
66
7256
8-384
9176
10-24
113125
12-6250
134375
14-1250
15120
1646656
17-116640
18110160
19-48600
209864
21-720
22823543
23-2470629
242941225
25-1764735
26557032
27-86436
285040
2916777216
30-58720256
3184410368
32-64225280
3327725824
34-6723584
35836352
36-40320
37387420489
38-1549681956

[1,4,-2,27,-27,6,256,-384,176,-24,3125,-6250,4375,
 -1250,120,46656,-116640,110160,-48600,9864,-720,
 823543,-2470629,2941225,-1764735,557032,-86436,
 5040,16777216,-58720256,84410368,-64225280,
 27725824,-6723584,836352,-40320,387420489,
 -1549681956]