login

A191058 as a simple table

na(n)
12
23
311
431
543
647
753
861
973
1079
1189
12101
13103
14109
15113
16151
17163
18167
19191
20193
21197
22227
23229
24241
25269
26283
27293
28307
29313
30353
31379
32389
33397
34419
35421
36431
37449
38461
39463
40467
41479
42487
43491
44503
45509
46521
47547
48557
49571
50593
51607
52613
53617
54631

[2,3,11,31,43,47,53,61,73,79,89,101,103,109,113,
 151,163,167,191,193,197,227,229,241,269,283,293,
 307,313,353,379,389,397,419,421,431,449,461,463,
 467,479,487,491,503,509,521,547,557,571,593,607,
 613,617,631]