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A038026 as a simple table

na(n)
12
23
37
45
519
67
729
817
919
1019
1143
1213
13103
1429
1531
1641
17103
1819
19191
2041
2167
2243
23137
2473
25149
26103
27109
2883
29317
3031
31311
3297
33181
34103
35191
3671
37439
38191
39233
4089
41379
4267
43463
44113
45181
46137
47967
4897
49613
50149
51197
52181
53607
54109
55331
56233

[2,3,7,5,19,7,29,17,19,19,43,13,103,29,31,41,103,
 19,191,41,67,43,137,73,149,103,109,83,317,31,311,
 97,181,103,191,71,439,191,233,89,379,67,463,113,
 181,137,967,97,613,149,197,181,607,109,331,233]