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A108310 as a simple table

na(n)
12
23
35
47
513
619
743
847
973
10103
11107
12109
13113
14199
15283
16467
17661
18887
191063
201069
211097
221103
231109
241123
251129
261303
271307
281321
291327
301621
311627
322803
333931
343947
354273
364289
374297
385867
395869
405881
416373
426379
439439
449473
459479
469497
479551
489859

[2,3,5,7,13,19,43,47,73,103,107,109,113,199,283,
 467,661,887,1063,1069,1097,1103,1109,1123,1129,
 1303,1307,1321,1327,1621,1627,2803,3931,3947,4273,
 4289,4297,5867,5869,5881,6373,6379,9439,9473,9479,
 9497,9551,9859]