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A175097 as a simple table

na(n)
13
25
331
461
5163
6193
7227
8383
9401
10521
11631
12653
13883
141019
151151
161229
171433
181601
191669
201801
211873
222437
232729
243191
253671
264013
274049
284127
294447
305507
315651
325701
335813
346079
356199
366353
376569
386823
396857
407507
417529
427873
437907
448291
458419
468461

[3,5,31,61,163,193,227,383,401,521,631,653,883,
 1019,1151,1229,1433,1601,1669,1801,1873,2437,2729,
 3191,3671,4013,4049,4127,4447,5507,5651,5701,5813,
 6079,6199,6353,6569,6823,6857,7507,7529,7873,7907,
 8291,8419,8461]