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A164930 as a simple table

na(n)
15
25
311
417
55
611
723
85
929
1017
115
1241
1311
1423
1547
165
1753
1816
1929
2059
2117
2271
235
2441
2583
2622
2711
2889
2923
3047
315
32101
3353
34107
3516
36113
3728
3829
3959
4011
415
42131
4317
44137
4571
4634
47149
485
4941
5083
51167
5222
53173
5411
5589
56179
5723
5828
5947
60191
61197
625
63101
6446
6553
66107
6716
68113
69227
7028

[5,5,11,17,5,11,23,5,29,17,5,41,11,23,47,5,53,16,
 29,59,17,71,5,41,83,22,11,89,23,47,5,101,53,107,
 16,113,28,29,59,11,5,131,17,137,71,34,149,5,41,83,
 167,22,173,11,89,179,23,28,47,191,197,5,101,46,53,
 107,16,113,227,28]