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A391927 as a simple table

na(n)
15
27
311
413
517
619
721
823
928
1029
1131
1233
1334
1435
1537
1638
1739
1841
1943
2044
2146
2247
2349
2451
2552
2653
2755
2857
2958
3059
3161
3262
3365
3466
3567
3668
3769
3871
3973
4076
4177
4278
4379
4482
4583
4685
4786
4887
4989
5091
5192
5293
5394
5495
5597
5699
57101
58102
59103
60104
61106
62107
63109
64111
65113
66114
67115
68116
69117
70118
71119
72121
73122
74123
75124
76127

[5,7,11,13,17,19,21,23,28,29,31,33,34,35,37,38,39,
 41,43,44,46,47,49,51,52,53,55,57,58,59,61,62,65,
 66,67,68,69,71,73,76,77,78,79,82,83,85,86,87,89,
 91,92,93,94,95,97,99,101,102,103,104,106,107,109,
 111,113,114,115,116,117,118,119,121,122,123,124,
 127]