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A120270 as a simple table

na(n)
11
21
33
41
51
611
71
817
91
101
1129
1229
131
1441
1541
164913
1717
1859
1959
201
2171
2271
231
241
251
261
27101
28101
2910807
301
311
321
331
34137
35137
3620413
3720413
3820413
391
401
411
42179
431
44191
45191
4637627
4737627
4837627
49191
5043357
51227
52227
5354253
54227
551
561
571
58269
59269
601

[1,1,3,1,1,11,1,17,1,1,29,29,1,41,41,4913,17,59,
 59,1,71,71,1,1,1,1,101,101,10807,1,1,1,1,137,137,
 20413,20413,20413,1,1,1,179,1,191,191,37627,37627,
 37627,191,43357,227,227,54253,227,1,1,1,269,269,1]