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A160194 as a simple table

na(n)
01
19
2-311
3-9855
4277041
517946009
6-381486279
7-45642389679
8636016842465
9148858685615529
10-904139249676759
11-591663300859964511
12-1426321263133495791
132770347275877071597625
1432201658639821938929561
15-14913850922254971477399951
16-323570411102447744202418239

[1,9,-311,-9855,277041,17946009,-381486279,
 -45642389679,636016842465,148858685615529,
 -904139249676759,-591663300859964511,
 -1426321263133495791,2770347275877071597625,
 32201658639821938929561,
 -14913850922254971477399951,
 -323570411102447744202418239]