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A138965 as a simple table

na(n)
11
213
33
423
537
63
711617
85
93
10135791113151719
1129
123
135
1411
153
16135791113151719212325272931
1717
183
197
2013
213
22131
235
243
2511
2625471443030907588399109
273
285
297
303
31181
3241
333
34135791113151719212325272931333537394143454749515355575961636567
3519
363
3740351
385
393
407
4111
423
435
4457041
453
46351269
4711
483
49135791113151719212325272931333537394143454749515355575961636567697173757779818385878991939597

[1,13,3,23,37,3,11617,5,3,135791113151719,29,3,5,
 11,3,135791113151719212325272931,17,3,7,13,3,131,
 5,3,11,25471443030907588399109,3,5,7,3,181,41,3,
 13579111315171921232527293133353739414345474951535\
 5575961636567,19,3,40351,5,3,7,11,3,5,57041,3,
 351269,11,3,
 13579111315171921232527293133353739414345474951535\
 5575961636567697173757779818385878991939597]