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A155006 as a simple table

na(n)
15
27
313
423
537
643
773
8167
9233
10263
11433
12557
13587
14593
15607
16727
17857
181153
191597
201627
211753
222143
232663
242713
253433
263607
273863
283947
294027
304363
314423
324673
335147
345477
355623
365807
375903
386277
397237
407333
417577
428287
438647
448837
458887
469043
4710067

[5,7,13,23,37,43,73,167,233,263,433,557,587,593,
 607,727,857,1153,1597,1627,1753,2143,2663,2713,
 3433,3607,3863,3947,4027,4363,4423,4673,5147,5477,
 5623,5807,5903,6277,7237,7333,7577,8287,8647,8837,
 8887,9043,10067]