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A221303 as a simple table

na(n)
11
23
33
47
519
67
717
8137
9137
1017
1141
121001
132899
141001
1541
1699
177305
1863285
1963285
207305
2199
22239
2353291
241388449
254119299
261388449
2753291
28239
29577
30388741
3130470039
32270434991
33270434991
3430470039
35388741
36577
371393
382835697
39668597561

[1,3,3,7,19,7,17,137,137,17,41,1001,2899,1001,41,
 99,7305,63285,63285,7305,99,239,53291,1388449,
 4119299,1388449,53291,239,577,388741,30470039,
 270434991,270434991,30470039,388741,577,1393,
 2835697,668597561]