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A129227 as a simple table

na(n)
13
23
33
411
55
617
77
85
97
1031
1117
1237
1337
1443
1547
165
1753
1853
1959
2031
2113
2223
2371
2473
2513
2679
2783
2829
2913
3047
3197
3297
33103
3453
35109
36113
3729
3817
3961
4031
41127
42131
4367
44137
4547
4671
4773
48149
49151
50157
51157
52163
5383
54167
5543
56173
57179
58181
5937
6047
61191
6297
63197
6467
6517
66103

[3,3,3,11,5,17,7,5,7,31,17,37,37,43,47,5,53,53,59,
 31,13,23,71,73,13,79,83,29,13,47,97,97,103,53,109,
 113,29,17,61,31,127,131,67,137,47,71,73,149,151,
 157,157,163,83,167,43,173,179,181,37,47,191,97,
 197,67,17,103]