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A143427 as a simple table

na(n)
15
25
311
411
55
65
711
823
95
1011
1117
1241
1323
145
1511
1617
1729
1817
1917
2011
2147
2241
2311
2411
2541
2611
2729
2841
295
3011
3129
3217
3311
345
3547
3617
3717
3853
3911
405
4117
4217
4347
4429
4511
4623
4711
485
4917
505
5117
5229
5311
5417
5529
5611
5717
585
5911
6017
615
6217
6317
6429
6517
6617
675
6823
6923
7011
71113
7217
73113
745

[5,5,11,11,5,5,11,23,5,11,17,41,23,5,11,17,29,17,
 17,11,47,41,11,11,41,11,29,41,5,11,29,17,11,5,47,
 17,17,53,11,5,17,17,47,29,11,23,11,5,17,5,17,29,
 11,17,29,11,17,5,11,17,5,17,17,29,17,17,5,23,23,
 11,113,17,113,5]