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A246857 as a simple table

na(n)
12
23
35
411
523
629
741
853
983
1089
11113
12131
13173
14179
15191
16233
17239
18251
19281
20293
21329
22359
23413
24419
25431
26443
27491
28509
29593
30623
31641
32653
33659
34683
35719
36743
37761
38809
39869
40911
41953
42979
431013
441019
451031
461049
471103
481223
491229
501289
511409
521439
531451

[2,3,5,11,23,29,41,53,83,89,113,131,173,179,191,
 233,239,251,281,293,329,359,413,419,431,443,491,
 509,593,623,641,653,659,683,719,743,761,809,869,
 911,953,979,1013,1019,1031,1049,1103,1223,1229,
 1289,1409,1439,1451]