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A091313 as a simple table

na(n)
12
27
317
429
559
679
7239
8157
9211
10293
11347
12449
13541
14607
15709
16853
171009
181103
191277
201423
211543
221741
231913
242137
252437
262633
272789
282999
293163
303391
313943
324201
334523
344729
355227
365437
375813
386197
396521
406947
417349
427603
438219
448501
458867
469157
479923

[2,7,17,29,59,79,239,157,211,293,347,449,541,607,
 709,853,1009,1103,1277,1423,1543,1741,1913,2137,
 2437,2633,2789,2999,3163,3391,3943,4201,4523,4729,
 5227,5437,5813,6197,6521,6947,7349,7603,8219,8501,
 8867,9157,9923]