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A198327 as a simple table

na(n)
16
235
351
457
587
693
795
8121
9123
10143
11145
12161
13185
14187
15203
16205
17215
18217
19219
20221
21237
22249
23267
24289
25291
26301
27303
28305
29321
30323
31329
32341
33393
34395
35413
36415
37417
38447
39453
40471
41473
42517
43519
44529
45535
46537
47545
48553
49581
50583
51591
52635
53669
54671

[6,35,51,57,87,93,95,121,123,143,145,161,185,187,
 203,205,215,217,219,221,237,249,267,289,291,301,
 303,305,321,323,329,341,393,395,413,415,417,447,
 453,471,473,517,519,529,535,537,545,553,581,583,
 591,635,669,671]