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A176989 as a simple table

na(n)
02
12
25
36
43
52
640
724
88
9-1
1030
11300
12120
1330
14-12
15-24
16360
172400
18720
19144
2020
21-420
22-420
234200
2421000
255040
26840
27480
28960
29-10080
30-6720
3150400
32201600
3340320
345760
35-1512
3630240
3730240
38-211680
39-105840
40635040
412116800
42362880
4345360
44-60480
45-120960
461209600
47806400

[2,2,5,6,3,2,40,24,8,-1,30,300,120,30,-12,-24,360,
 2400,720,144,20,-420,-420,4200,21000,5040,840,480,
 960,-10080,-6720,50400,201600,40320,5760,-1512,
 30240,30240,-211680,-105840,635040,2116800,362880,
 45360,-60480,-120960,1209600,806400]