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A209188 as a simple table

na(n)
25
311
419
529
641
75
871
989
10109
11131
125
13181
1411
15239
16271
175
1811
19379
20419
21461
225
2319
24599
2511
26701
275
28811
2911
30929
31991
325
3319
3429
351259
3611
375
381481
391559
4011
411721
425
4331
441979
452069
462161
475
482351
4931
502549

[5,11,19,29,41,5,71,89,109,131,5,181,11,239,271,5,
 11,379,419,461,5,19,599,11,701,5,811,11,929,991,5,
 19,29,1259,11,5,1481,1559,11,1721,5,31,1979,2069,
 2161,5,2351,31,2549]