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A281505 as a simple table

na(n)
13
25
39
411
515
619
721
825
929
1035
1139
1245
1349
1451
1555
1659
1761
1865
1969
2071
2175
2279
2385
2491
2595
2699
27101
28105
29115
30121
31129
32131
33139
34141
35145
36159
37165
38169
39171
40175
41181
42189
43195
44199
45201
46205
47209
48215
49219
50221

[3,5,9,11,15,19,21,25,29,35,39,45,49,51,55,59,61,
 65,69,71,75,79,85,91,95,99,101,105,115,121,129,
 131,139,141,145,159,165,169,171,175,181,189,195,
 199,201,205,209,215,219,221]