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A226025 as a simple table

na(n)
115
221
327
433
535
639
745
851
955
1057
1163
1265
1369
1475
1577
1681
1785
1887
1991
2093
2195
2299
23105
24111
25115
26117
27119
28123
29125
30129
31133
32135
33141
34143
35145
36147
37153
38155
39159
40161
41165
42171
43175
44177
45183
46185
47187
48189
49195
50201
51203
52205
53207
54209
55213
56215
57217

[15,21,27,33,35,39,45,51,55,57,63,65,69,75,77,81,
 85,87,91,93,95,99,105,111,115,117,119,123,125,129,
 133,135,141,143,145,147,153,155,159,161,165,171,
 175,177,183,185,187,189,195,201,203,205,207,209,
 213,215,217]