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A215806 as a simple table

na(n)
13
25
37
49
513
615
717
819
921
1025
1127
1231
1337
1439
1545
1649
1751
1857
1961
2063
2165
2267
2375
2481
2585
2689
2793
28101
29103
30107
31111
32117
33125
34127
35133
36135
37139
38147
39153
40171
41183
42189
43195
44201
45217
46221
47225
48243
49255
50257
51259
52267
53269
54271
55279
56281
57293
58303
59309
60321
61333
62343
63347
64349
65351
66353
67373
68375
69379
70381
71399

[3,5,7,9,13,15,17,19,21,25,27,31,37,39,45,49,51,
 57,61,63,65,67,75,81,85,89,93,101,103,107,111,117,
 125,127,133,135,139,147,153,171,183,189,195,201,
 217,221,225,243,255,257,259,267,269,271,279,281,
 293,303,309,321,333,343,347,349,351,353,373,375,
 379,381,399]