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A046732 as a simple table

na(n)
12
23
35
47
513
617
731
837
971
1073
1179
1297
13107
14149
15157
16167
17179
18347
19359
20389
21701
22709
23739
24743
25751
26761
27769
28907
29937
30941
31953
32967
33971
34983
351069
361097
371237
381249
391259
401279
411283
421409
431429
441439
451453
461487
471523
481583
491597
501657
511723
521753

[2,3,5,7,13,17,31,37,71,73,79,97,107,149,157,167,
 179,347,359,389,701,709,739,743,751,761,769,907,
 937,941,953,967,971,983,1069,1097,1237,1249,1259,
 1279,1283,1409,1429,1439,1453,1487,1523,1583,1597,
 1657,1723,1753]