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A082594 as a simple table

na(n)
12
21
32
43
56
615
738
891
9206
10443
11900
121701
132914
144303
154748
161081
17-14000
18-55335
19-150394
20-346163
21-716966
22-1369429
23-2432788
24-4002993
25-5964748
26-7525017
27-6123026
284900093
2940900520
30134308945
31348584680
32798958751
331678213244
343277458981
355972923998
3610110994307

[2,1,2,3,6,15,38,91,206,443,900,1701,2914,4303,
 4748,1081,-14000,-55335,-150394,-346163,-716966,
 -1369429,-2432788,-4002993,-5964748,-7525017,
 -6123026,4900093,40900520,134308945,348584680,
 798958751,1678213244,3277458981,5972923998,
 10110994307]