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A057386 as a simple table

na(n)
01
10
20
30
40
50
6-4
70
80
90
10-24
11-48
1260
130
14-300
15-480
16144
171392
18-4392
19-7248
202904
2113280
22-27348
23-142512
2429948
25241872
26-336072
27-1711936
28-950268
294759680
30-2790212
31-25599600
32-17648472
3353777216
3424551472
35-385317888

[1,0,0,0,0,0,-4,0,0,0,-24,-48,60,0,-300,-480,144,
 1392,-4392,-7248,2904,13280,-27348,-142512,29948,
 241872,-336072,-1711936,-950268,4759680,-2790212,
 -25599600,-17648472,53777216,24551472,-385317888]