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A113278 as a simple table

na(n)
01
11
21
3-1
42
51
63
7-3
83
91
10-15
1112
12-6
134
141
15105
16-75
1730
18-10
195
201
21-945
22630
23-225
2460
25-15
266
271
2810395
29-6615
302205
31-525
32105
33-21
347
351
36-135135
3783160
38-26460
395880
40-1050
41168
42-28
438
441
452027025
46-1216215
47374220
48-79380
4913230
50-1890
51252
52-36
539
541

[1,1,1,-1,2,1,3,-3,3,1,-15,12,-6,4,1,105,-75,30,
 -10,5,1,-945,630,-225,60,-15,6,1,10395,-6615,2205,
 -525,105,-21,7,1,-135135,83160,-26460,5880,-1050,
 168,-28,8,1,2027025,-1216215,374220,-79380,13230,
 -1890,252,-36,9,1]