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A160073 as a simple table

na(n)
01
19
2-257
3-8397
4185025
513017969
6-195530529
7-28160215893
8209183288577
978027873371865
1065915296495551
11-263140974328443741
12-2613341841326452287
131043779715304229742913
1420877041488526499035295
15-4751272239422876652146661
16-148608050501635239978265599

[1,9,-257,-8397,185025,13017969,-195530529,
 -28160215893,209183288577,78027873371865,
 65915296495551,-263140974328443741,
 -2613341841326452287,1043779715304229742913,
 20877041488526499035295,
 -4751272239422876652146661,
 -148608050501635239978265599]