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A138757 as a simple table

na(n)
02
12
22
37
411
53
613
717
85
919
1023
117
1229
1329
147
1531
1637
1711
1837
1941
2011
2143
2247
2313
2453
2553
2613
2759
2859
2917
3061
3167
3217
3367
3471
3519
3673
3779
3819
3979
4083
4123
4289
4389
4423
4597
4697
4729
4897
49101
5029
51103
52107
5329
54109
55113
5629
57127
58127
5931
60127
61127
6231
63127

[2,2,2,7,11,3,13,17,5,19,23,7,29,29,7,31,37,11,37,
 41,11,43,47,13,53,53,13,59,59,17,61,67,17,67,71,
 19,73,79,19,79,83,23,89,89,23,97,97,29,97,101,29,
 103,107,29,109,113,29,127,127,31,127,127,31,127]