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A020626 as a simple table

na(n)
15
27
311
413
517
619
723
829
931
1037
1141
1243
1347
1453
1559
1661
1767
1871
1979
2083
21103
22107
23109
24127
25137
26157
27163
28173
29191
30197
31211
32223
33229
34233
35283
36337
37367
38373
39409
40421
41479
42607
43643
44691
45751
46863
47887
48941
49967
501019
511109
521181
531237
541307
551471

[5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,
 71,79,83,103,107,109,127,137,157,163,173,191,197,
 211,223,229,233,283,337,367,373,409,421,479,607,
 643,691,751,863,887,941,967,1019,1109,1181,1237,
 1307,1471]