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A160486 as a simple table

na(n)
11
21
31
41
518
65
71
8179
9479
1061
111
121636
1318270
1419028
151385
161
1714757
18540242
191949762
201073517
2150521
221
23132854
2414494859
25137963364
26241595239
2782112518
282702765

[1,1,1,1,18,5,1,179,479,61,1,1636,18270,19028,
 1385,1,14757,540242,1949762,1073517,50521,1,
 132854,14494859,137963364,241595239,82112518,
 2702765]