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A293037 as a simple table

na(n)
01
10
2-1
3-1
42
59
69
7-50
8-267
9-413
102180
1117731
1250533
13-110176
14-1966797
15-9938669
16-8638718
17278475061
182540956509
199816860358
20-27172288399
21-725503033401
22-5592543175252
23-15823587507881
24168392610536153
252848115497132448
2620819319685262839

[1,0,-1,-1,2,9,9,-50,-267,-413,2180,17731,50533,
 -110176,-1966797,-9938669,-8638718,278475061,
 2540956509,9816860358,-27172288399,-725503033401,
 -5592543175252,-15823587507881,168392610536153,
 2848115497132448,20819319685262839]