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A171770 as a simple table

na(n)
01
1-1
2-1
31
47
5-1
6-32
7-17
82
91
10131
11263
12-11
13-1
14-522
15-2672
16-782
17153
18-16
191
202073
2122868
2223108
23-2157
24187
25-1
26-8248
27-179475
28-410608
29-61903
3018408
31-3565
32272
331
3432887
351342125
365870299
373525859
38-524187
3979087
40-4151
41-1
42-131318

[1,-1,-1,1,7,-1,-32,-17,2,1,131,263,-11,-1,-522,
 -2672,-782,153,-16,1,2073,22868,23108,-2157,187,
 -1,-8248,-179475,-410608,-61903,18408,-3565,272,1,
 32887,1342125,5870299,3525859,-524187,79087,-4151,
 -1,-131318]