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A068016 as a simple table

na(n)
123
237
367
4233
5277
6631
71039
81283
91297
101307
111613
121693
131709
142099
152137
162333
172719
182797
193271
203533
213547
223571
233923
244027
254253
264523
274643
284793
295483
305507
315647
326563
337321
348831
358849
369007
379029
3810061
3910079
4010289
4110513
4212049
4313687

[23,37,67,233,277,631,1039,1283,1297,1307,1613,
 1693,1709,2099,2137,2333,2719,2797,3271,3533,3547,
 3571,3923,4027,4253,4523,4643,4793,5483,5507,5647,
 6563,7321,8831,8849,9007,9029,10061,10079,10289,
 10513,12049,13687]