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A145176 as a simple table

na(n)
11
21
31
41
51
61
71
81
91
101
111
127
135
141
151
161
1741
18181
191
205
211
221
23109
2497
2541
2635
271
281
291
30853
31551
32173
33107
341
357
361
371
3819
3913579
401313
41307
42203
437
441
451
461
471679
48251
491081
505969
511681
521169
535
543
551
561
571537
583169
594913
6013583
613481
627819
63101
6411
655
661
671
6818167

[1,1,1,1,1,1,1,1,1,1,1,7,5,1,1,1,41,181,1,5,1,1,
 109,97,41,35,1,1,1,853,551,173,107,1,7,1,1,19,
 13579,1313,307,203,7,1,1,1,1679,251,1081,5969,
 1681,1169,5,3,1,1,1537,3169,4913,13583,3481,7819,
 101,11,5,1,1,18167]