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A171422 as a simple table

na(n)
01
1-1
2-9
3-41
4-241
5-271
627329
7651521
818425809
9399122991
10-24055184809
11-3943757411849
12-498726356978849
13-74609317288333151
142771780972000481601
158459493968101503667649
165139175203350482789079649

[1,-1,-9,-41,-241,-271,27329,651521,18425809,
 399122991,-24055184809,-3943757411849,
 -498726356978849,-74609317288333151,
 2771780972000481601,8459493968101503667649,
 5139175203350482789079649]