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A007591 as a simple table

na(n)
11
23
35
47
513
615
717
827
933
1035
1137
1245
1347
1457
1565
1667
1773
1885
1987
2095
2197
22103
23115
24117
25125
26135
27137
28147
29155
30163
31167
32177
33183
34193
35203
36207
37215
38217
39233
40235
41243
42245
43253
44255
45265
46267
47275
48277
49287
50293
51303
52307
53313
54317
55347
56357
57373
58375

[1,3,5,7,13,15,17,27,33,35,37,45,47,57,65,67,73,
 85,87,95,97,103,115,117,125,135,137,147,155,163,
 167,177,183,193,203,207,215,217,233,235,243,245,
 253,255,265,267,275,277,287,293,303,307,313,317,
 347,357,373,375]