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A080243 as a simple table

na(n)
01
1-1
23
3-11
445
5-197
6903
7-4279
820793
9-103049
10518859
11-2646723
1213648869
13-71039373
14372693519
15-1968801519
1610463578353
17-55909013009
18300159426963
19-1618362158587
208759309660445
21-47574827600981
22259215937709463
23-1416461675464871
247760733824437545
25-42624971294485657

[1,-1,3,-11,45,-197,903,-4279,20793,-103049,
 518859,-2646723,13648869,-71039373,372693519,
 -1968801519,10463578353,-55909013009,300159426963,
 -1618362158587,8759309660445,-47574827600981,
 259215937709463,-1416461675464871,
 7760733824437545,-42624971294485657]