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A262741 as a simple table

na(n)
115
233
345
451
563
665
769
875
987
1091
1195
1299
13105
14123
15135
16141
17145
18147
19153
20159
21165
22175
23177
24189
25195
26207
27213
28221
29225
30231
31245
32249
33255
34261
35267
36273
37285
38287
39295
40297
41303
42315
43321
44325
45339
46345
47357
48363
49369
50375
51385
52393
53395
54399

[15,33,45,51,63,65,69,75,87,91,95,99,105,123,135,
 141,145,147,153,159,165,175,177,189,195,207,213,
 221,225,231,245,249,255,261,267,273,285,287,295,
 297,303,315,321,325,339,345,357,363,369,375,385,
 393,395,399]