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A057468 as a simple table

na(n)
12
23
35
417
529
631
753
859
9101
10277
11647
121061
132381
142833
153613
163853
173929
185297
197417
2090217
21122219
22173191
23256199
24336353
25485977
26591827
271059503

[2,3,5,17,29,31,53,59,101,277,647,1061,2381,2833,
 3613,3853,3929,5297,7417,90217,122219,173191,
 256199,336353,485977,591827,1059503]