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A006769 as a simple table

na(n)
00
11
21
3-1
41
52
6-1
7-3
8-5
97
10-4
11-23
1229
1359
14129
15-314
16-65
171529
18-3689
19-8209
20-16264
2183313
22113689
23-620297
242382785
257869898
267001471
27-126742987
28-398035821
291687054711
30-7911171596
31-47301104551
3243244638645

[0,1,1,-1,1,2,-1,-3,-5,7,-4,-23,29,59,129,-314,
 -65,1529,-3689,-8209,-16264,83313,113689,-620297,
 2382785,7869898,7001471,-126742987,-398035821,
 1687054711,-7911171596,-47301104551,43244638645]