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A055135 as a simple table

na(n)
01
10
21
3-1
4-2
51
6-2
70
8-6
91
10-3
110
1218
13-12
141
15-4
160
17-40
1880
19-20
201
21-5
220
2375
24-400
25225
26-30
271
28-6
290
30-126
311680
32-1890
33504
34-42
351
36-7
370
38196
39-6272
4013230
41-6272
42980
43-56
441
45-8
460
47-288
4821504
49-81648
5064512
51-16800
521728
53-72
541
55-9
560
57405

[1,0,1,-1,-2,1,-2,0,-6,1,-3,0,18,-12,1,-4,0,-40,
 80,-20,1,-5,0,75,-400,225,-30,1,-6,0,-126,1680,
 -1890,504,-42,1,-7,0,196,-6272,13230,-6272,980,
 -56,1,-8,0,-288,21504,-81648,64512,-16800,1728,
 -72,1,-9,0,405]