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A257752 as a simple table

na(n)
1221
2323
3899
4935
51105
61147
71271
81591
91595
101885
112093
122465
132821
144757
154807
164991
175609
185963
196497
207081
217843
229991
2310373
2410403
2510961
2611009
2712319
2813843
2914111
3016031
3117155
3217399
3317653
3417963
3519043
3619721
3720701
3824613
3927331
4028417
4129341

[221,323,899,935,1105,1147,1271,1591,1595,1885,
 2093,2465,2821,4757,4807,4991,5609,5963,6497,7081,
 7843,9991,10373,10403,10961,11009,12319,13843,
 14111,16031,17155,17399,17653,17963,19043,19721,
 20701,24613,27331,28417,29341]