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A244916 as a simple table

na(n)
13
231
371
497
5107
6277
7307
8641
9907
10967
111009
121447
133463
143527
157757
168167
17250867
18279047

[3,31,71,97,107,277,307,641,907,967,1009,1447,
 3463,3527,7757,8167,250867,279047]