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A108369 as a simple table

na(n)
00
11
2-3
36
4-8
53
621
7-80
8180
9-279
10217
11366
12-2028
135203
14-9159
159840
163160
17-48159
18144837
19-286874
20377952
21-128397
22-1035539
233869760
24-8631060
2513248361
26-9982143
27-18429714
2898483932
29-250144797
30436552881
31-460740320
32-177582480
332351521281

[0,1,-3,6,-8,3,21,-80,180,-279,217,366,-2028,5203,
 -9159,9840,3160,-48159,144837,-286874,377952,
 -128397,-1035539,3869760,-8631060,13248361,
 -9982143,-18429714,98483932,-250144797,436552881,
 -460740320,-177582480,2351521281]