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A159969 as a simple table

na(n)
01
113
2-119
3-9035
4-14639
510218013
6153914329
7-15655840187
8-513817209695
929391432064813
101713902824372009
11-62366587629825323
12-6240409786798253711
13134413599620299018045
1425111471036836549128569
15-215506510190170502086043
16-111283139511606108762536639

[1,13,-119,-9035,-14639,10218013,153914329,
 -15655840187,-513817209695,29391432064813,
 1713902824372009,-62366587629825323,
 -6240409786798253711,134413599620299018045,
 25111471036836549128569,-215506510190170502086043,
 -111283139511606108762536639]