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A347598 as a simple table

na(n)
01
10
2-1
32
45
5-12
6-61
7230
81385
9-6936
10-50521
11316682
122702765
13-20359332
14-199360981
151754340590
1619391512145
17-195242324016
18-2404879675441
1927266796955922
20370371188237525
21-4669829301365052
22-69348874393137901
23962523286888757750
2415514534163557086905

[1,0,-1,2,5,-12,-61,230,1385,-6936,-50521,316682,
 2702765,-20359332,-199360981,1754340590,
 19391512145,-195242324016,-2404879675441,
 27266796955922,370371188237525,-4669829301365052,
 -69348874393137901,962523286888757750,
 15514534163557086905]