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A176404 as a simple table

na(n)
19
215
325
433
539
649
755
857
965
1087
1195
12111
13119
14121
15129
16143
17145
18159
19161
20169
21177
22183
23185
24201
25209
26215
27217
28247
29249
30265
31287
32289
33295
34303
35305
36319
37321
38327
39329
40335
41361
42377
43391
44393
45407
46415
47417
48447
49471
50473
51481
52489
53497
54505

[9,15,25,33,39,49,55,57,65,87,95,111,119,121,129,
 143,145,159,161,169,177,183,185,201,209,215,217,
 247,249,265,287,289,295,303,305,319,321,327,329,
 335,361,377,391,393,407,415,417,447,471,473,481,
 489,497,505]