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A156730 as a simple table

na(n)
01
11
21
31
45
52
61
77
8-25
96
101
119
12-98
13-875
1424
151
1611
17-243
18-15092
19398125
20120
211
2213
23-484
24-98415
2546483360
263441790625
27720
281
2915
30-845
31-404624
321076168025
334151893715200
34-743856998828125
355040
361
3717
38-1350
39-1263275
4011501032576
41458947996781625
42-14092191572383232000
43-4983748910023583984375
4440320

[1,1,1,1,5,2,1,7,-25,6,1,9,-98,-875,24,1,11,-243,
 -15092,398125,120,1,13,-484,-98415,46483360,
 3441790625,720,1,15,-845,-404624,1076168025,
 4151893715200,-743856998828125,5040,1,17,-1350,
 -1263275,11501032576,458947996781625,
 -14092191572383232000,-4983748910023583984375,
 40320]