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A163551 as a simple table

na(n)
11
21
31
41
51
61
71
81
91
101
111
121
131
1413
1525
1649
1797
18193
19385
20769
211537
223073
236145
2412289
2524577
2649153
2798305
28196597
29393169
30786289
311572481
323144769
336289153
3412577537
3525153537
3650304001
37100601857
38201191425
39402358273
40804667393

[1,1,1,1,1,1,1,1,1,1,1,1,1,13,25,49,97,193,385,
 769,1537,3073,6145,12289,24577,49153,98305,196597,
 393169,786289,1572481,3144769,6289153,12577537,
 25153537,50304001,100601857,201191425,402358273,
 804667393]