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A133437 as a simple table

na(n)
11
2-2
312
4-6
5-120
6120
7-24
81680
9-2520
10360
11720
12-120
13-30240
1460480
15-20160
16-20160
175040
185040
19-720
20665280
21-1663200
22907200
23604800
24-60480
25-362880
26-181440
2720160
2840320
2940320
30-5040
31-17297280
3251891840
33-39916800
34-19958400
356652800
3619958400
376652800
38-1814400
39-1814400
40-3628800
41-1814400
42362880
43362880
44362880
45-40320

[1,-2,12,-6,-120,120,-24,1680,-2520,360,720,-120,
 -30240,60480,-20160,-20160,5040,5040,-720,665280,
 -1663200,907200,604800,-60480,-362880,-181440,
 20160,40320,40320,-5040,-17297280,51891840,
 -39916800,-19958400,6652800,19958400,6652800,
 -1814400,-1814400,-3628800,-1814400,362880,362880,
 362880,-40320]