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A137862 as a simple table

na(n)
11
20
34
4-4
50
620
70
8-60
90
10128
1160
120
13-768
140
151040
160
171920
180
19-10400
200
2110432
22-1920
230
2446800
250
26-156480
270
28125248
290
30-109200
310
321095360
330
34-2630208
350
361753600
37109200
380
39-4381440
400
4126302080
420
43-49100800
440
4528057856
460
479858240
480
49-157812480
500
51662860800
520
53-1010082816
540

[1,0,4,-4,0,20,0,-60,0,128,60,0,-768,0,1040,0,
 1920,0,-10400,0,10432,-1920,0,46800,0,-156480,0,
 125248,0,-109200,0,1095360,0,-2630208,0,1753600,
 109200,0,-4381440,0,26302080,0,-49100800,0,
 28057856,0,9858240,0,-157812480,0,662860800,0,
 -1010082816,0]