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A007271 as a simple table

na(n)
01
10
20
30
40
50
60
70
8-3
90
100
110
120
130
14-24
15-24
1654
170
180
190
20-252
21-504
22900
231152
24-1452
25-3312
26-7344
2711484
2835856
29-30132
30-50184
31264
32-113160
33175464
34712176
35-319098
36-1997856
37334320
38341856
391211472
4013301112
41-2785392

[1,0,0,0,0,0,0,0,-3,0,0,0,0,0,-24,-24,54,0,0,0,
 -252,-504,900,1152,-1452,-3312,-7344,11484,35856,
 -30132,-50184,264,-113160,175464,712176,-319098,
 -1997856,334320,341856,1211472,13301112,-2785392]