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A309085 as a simple table

na(n)
01
1-4
212
3-20
4-20
5172
6108
7-2388
8-3220
947532
10161900
11-1062740
12-8532628
1313623212
14431041132
151206169260
16-17833021588
17-169685043796
18180187176044
1913462762665132
2079377664422252
21-553096696140884
22-11670986989785492
23-44371854928405844
24829755609457185644

[1,-4,12,-20,-20,172,108,-2388,-3220,47532,161900,
 -1062740,-8532628,13623212,431041132,1206169260,
 -17833021588,-169685043796,180187176044,
 13462762665132,79377664422252,-553096696140884,
 -11670986989785492,-44371854928405844,
 829755609457185644]