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A078521 as a simple table

na(n)
11
20
3-1
40
5-3
61
70
8-8
99
10-1
110
12-42
1359
14-18
151
160
17-144
18450
19-215
2030
21-1
220
23-1440
243394
25-2475
26565
27-45
281
290
30-5760
3130912
32-28294
339345
34-1225
3563
36-1
370
38-75600
39293292
40-340116
41147889
42-27720
432338
44-84
451
460
47-524160
483032208
49-4335596
502341332
51-579369
5269552
53-4074
54108
55-1
560
57-6531840

[1,0,-1,0,-3,1,0,-8,9,-1,0,-42,59,-18,1,0,-144,
 450,-215,30,-1,0,-1440,3394,-2475,565,-45,1,0,
 -5760,30912,-28294,9345,-1225,63,-1,0,-75600,
 293292,-340116,147889,-27720,2338,-84,1,0,-524160,
 3032208,-4335596,2341332,-579369,69552,-4074,108,
 -1,0,-6531840]