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A146080 as a simple table

na(n)
01
11
2-9
3-19
471
5261
6-449
7-3059
81431
932021
1017711
11-302499
12-479609
132545381
147341471
15-18112339
16-91527049
1789596341
181004866831
19108903421
20-9939764889
21-11028799099
2288368849791
23198656840781
24-685031657129
25-2671600064939

[1,1,-9,-19,71,261,-449,-3059,1431,32021,17711,
 -302499,-479609,2545381,7341471,-18112339,
 -91527049,89596341,1004866831,108903421,
 -9939764889,-11028799099,88368849791,198656840781,
 -685031657129,-2671600064939]