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A273460 as a simple table

na(n)
198
2101
3103
4107
5109
6307
7329
8401
9409
10503
11509
12601
13607
14701
15709
16809
17907
181009
191013
201019
211021
221031
231033
241039
251049
261051
271061
281063
291069
301087
311091
321093
331097
341103
351109
361201
371301
381303
391307
401409
411601
421607
431609
441709
451801
461901

[98,101,103,107,109,307,329,401,409,503,509,601,
 607,701,709,809,907,1009,1013,1019,1021,1031,1033,
 1039,1049,1051,1061,1063,1069,1087,1091,1093,1097,
 1103,1109,1201,1301,1303,1307,1409,1601,1607,1609,
 1709,1801,1901]