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A181489 as a simple table

na(n)
127
239
349
463
591
6133
7147
8399
9567
10763
112187
1213239
1315379
1415883
1521207
1632761
17151599
18173563
19180739
20268423
21746607
222277163
232557359
243114783
258218083
2628604419
2765002743
2868944959
2991727883
3093742347
31237963999
32310488507

[27,39,49,63,91,133,147,399,567,763,2187,13239,
 15379,15883,21207,32761,151599,173563,180739,
 268423,746607,2277163,2557359,3114783,8218083,
 28604419,65002743,68944959,91727883,93742347,
 237963999,310488507]