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A137455 as a simple table

na(n)
10
21
3-3
42
55
6-15
73
8-14
956
10-42
114
1254
13-170
14290
15-90
165
17-264
18744
19-1350
201000
21-165
226
231560
24-4116
256174
26-7210
272695
28-273
297
30-10800
3127264
32-37296
3341664
34-28420
356160
36-420
378
3885680
39-209520
40270864
41-260064
42223524
43-89964
4412516
45-612
469
47-766080
481828800
49-2274480
502021760
51-1587600

[0,1,-3,2,5,-15,3,-14,56,-42,4,54,-170,290,-90,5,
 -264,744,-1350,1000,-165,6,1560,-4116,6174,-7210,
 2695,-273,7,-10800,27264,-37296,41664,-28420,6160,
 -420,8,85680,-209520,270864,-260064,223524,-89964,
 12516,-612,9,-766080,1828800,-2274480,2021760,
 -1587600]