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A354437 as a simple table

na(n)
01
11
2-1
31
413
5-199
62251
7-19991
87001
97530193
10-330734249
1111005284401
12-300961551131
134886902605001
14184195977487523
15-28517140157423399
162322376314679777201
17-153646291657993064671
188388000381774954552751
19-287686436757241322569247

[1,1,-1,1,13,-199,2251,-19991,7001,7530193,
 -330734249,11005284401,-300961551131,
 4886902605001,184195977487523,-28517140157423399,
 2322376314679777201,-153646291657993064671,
 8388000381774954552751,-287686436757241322569247]