login

A338270 as a simple table

na(n)
123
237
379
483
589
6131
7233
8359
9367
10379
11439
12443
13509
14661
15683
16727
17809
18997
191013
201237
211297
221319
231381
241439
251499
261543
271559
281601
291657
301789
311811
321867
331889
342011
352081
362111
372137
382161
392281
402351
412393
422399
432467
442543
452579
462693
472699
482789
492851
502939
513169
523181
533187

[23,37,79,83,89,131,233,359,367,379,439,443,509,
 661,683,727,809,997,1013,1237,1297,1319,1381,1439,
 1499,1543,1559,1601,1657,1789,1811,1867,1889,2011,
 2081,2111,2137,2161,2281,2351,2393,2399,2467,2543,
 2579,2693,2699,2789,2851,2939,3169,3181,3187]