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A152449 as a simple table

na(n)
12
23
35
47
513
617
729
831
961
1097
11113
12127
13193
14241
15257
16449
17509
18769
191009
201021
212017
224093
237681
247937
258161
268191
2712289
2815361
2916369
3016381
3132257
3261441
3364513
3465521
3565537
36114689
37130817
38131009
39131041
40131071
41520193
42523777

[2,3,5,7,13,17,29,31,61,97,113,127,193,241,257,
 449,509,769,1009,1021,2017,4093,7681,7937,8161,
 8191,12289,15361,16369,16381,32257,61441,64513,
 65521,65537,114689,130817,131009,131041,131071,
 520193,523777]