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A280876 as a simple table

na(n)
13
25
311
4191
5353
6797
7919
811311
912421
1013331
1116061
1218181
1331513
1432323
1534543
1634843
1736563
1837273
1970207
2072727
2177377
2278787
231117111
241120211
251253521
261257521
271280821
281328231
291409041
301456541
311633361
321824281
331851581
341903091
351982891
361984891
371998991
383002003
393073703
403211123
413212123
423252523

[3,5,11,191,353,797,919,11311,12421,13331,16061,
 18181,31513,32323,34543,34843,36563,37273,70207,
 72727,77377,78787,1117111,1120211,1253521,1257521,
 1280821,1328231,1409041,1456541,1633361,1824281,
 1851581,1903091,1982891,1984891,1998991,3002003,
 3073703,3211123,3212123,3252523]