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A024126 as a simple table

na(n)
01
19
2-3996
3-530441
4-16767216
5-244040625
6-2175782336
7-13831287201
8-68619476736
9-281429536481
10-990000000000
11-3038428376721
12-7916100448256
13-13298085122481
1443306087624704
15870253662109375
169718525023289344

[1,9,-3996,-530441,-16767216,-244040625,
 -2175782336,-13831287201,-68619476736,
 -281429536481,-990000000000,-3038428376721,
 -7916100448256,-13298085122481,43306087624704,
 870253662109375,9718525023289344]