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A262020 as a simple table

na(n)
01
10
21
3-1
45
5-11
643
7-127
8489
9-1693
106771
11-26071
12109693
13-457757
142028671
15-9039931
1642101329
17-198411489
18967906675
19-4791497559
2024401815141
21-126243354637
22669094876055
23-3603105436163
2419818039219577
25-110721426757801
26630419303537115

[1,0,1,-1,5,-11,43,-127,489,-1693,6771,-26071,
 109693,-457757,2028671,-9039931,42101329,
 -198411489,967906675,-4791497559,24401815141,
 -126243354637,669094876055,-3603105436163,
 19818039219577,-110721426757801,630419303537115]