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A091383 as a simple table

na(n)
13
27
331
471
5103
6151
7199
8239
9271
10311
11359
12463
13599
14719
15823
16839
17911
181063
191231
201279
211303
221439
231559
241871
251879
261951
271999
282143
292239
302311
312351
322383
332399
342551
352711
362791
373191
383391
393463
403559
413583
423823
433911
443919
454079
464159

[3,7,31,71,103,151,199,239,271,311,359,463,599,
 719,823,839,911,1063,1231,1279,1303,1439,1559,
 1871,1879,1951,1999,2143,2239,2311,2351,2383,2399,
 2551,2711,2791,3191,3391,3463,3559,3583,3823,3911,
 3919,4079,4159]