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A159806 as a simple table

na(n)
01
11
2-241
3-725
4174241
5876041
6-209955569
7-1481967101
8354182766785
93223271074321
10-768186794983409
11-8568502794840229
122036344745450994529
1326919276861667019545
14-6379421292327161768689
15-97581931299655023987149
1623059717359847942196353921

[1,1,-241,-725,174241,876041,-209955569,
 -1481967101,354182766785,3223271074321,
 -768186794983409,-8568502794840229,
 2036344745450994529,26919276861667019545,
 -6379421292327161768689,-97581931299655023987149,
 23059717359847942196353921]