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A260612 as a simple table

na(n)
01
11
21
31
40
5-1
61
72
8-1
9-2
101
11-4
12-13
134
1412
151
1620
17-109
18-308
19108
20288
211
22-100
23-2509
2412772
2537068
26-12672
27-34560
281
29620
30-74509
31-1793708
329232908
3326676288
34-9158400
35-24883200
361
37-4420
38-3199309
39373731652
409049521228
41-46507180032
42-134457649920
4346133452800
44125411328000

[1,1,1,1,0,-1,1,2,-1,-2,1,-4,-13,4,12,1,20,-109,
 -308,108,288,1,-100,-2509,12772,37068,-12672,
 -34560,1,620,-74509,-1793708,9232908,26676288,
 -9158400,-24883200,1,-4420,-3199309,373731652,
 9049521228,-46507180032,-134457649920,46133452800,
 125411328000]