login

A054218 as a simple table

na(n)
12
23
35
47
5131
6313
7373
8797
911311
1017971
1118181
1219991
1335353
1472727
1578787
1690709
1793739
1896769
1998389
201153511
211193911
221201021
231409041
241583851
251597951
261657561
271831381
281879781
293083803
303089803
313319133
323343433
333391933
343541453
353643463

[2,3,5,7,131,313,373,797,11311,17971,18181,19991,
 35353,72727,78787,90709,93739,96769,98389,1153511,
 1193911,1201021,1409041,1583851,1597951,1657561,
 1831381,1879781,3083803,3089803,3319133,3343433,
 3391933,3541453,3643463]