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A213340 as a simple table

na(n)
15
213
317
421
529
637
741
845
953
1061
1165
1269
1377
1485
1589
1693
1797
18101
19109
20113
21117
22125
23133
24137
25141
26149
27153
28157
29161
30165
31173
32181
33185
34189
35197
36205
37209
38213
39221
40229
41233
42237
43241
44245
45253
46257

[5,13,17,21,29,37,41,45,53,61,65,69,77,85,89,93,
 97,101,109,113,117,125,133,137,141,149,153,157,
 161,165,173,181,185,189,197,205,209,213,221,229,
 233,237,241,245,253,257]