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A262830 as a simple table

na(n)
12
27
313
467
579
6151
7181
8193
9223
10283
11331
12421
13631
14661
15733
16877
171201
181321
191657
201669
211759
221789
231993
242383
252521
263061
273391
283463
293733
303877
313967
324093
334153
344243
354507
364987
375791
386121
396151
406211
416343
426661
436733
446961
457129
468089
478191

[2,7,13,67,79,151,181,193,223,283,331,421,631,661,
 733,877,1201,1321,1657,1669,1759,1789,1993,2383,
 2521,3061,3391,3463,3733,3877,3967,4093,4153,4243,
 4507,4987,5791,6121,6151,6211,6343,6661,6733,6961,
 7129,8089,8191]