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A373751 as a simple table

na(n)
12
23
33
45
57
65
72
811
913
107
113
127
1319
1419
1511
163
175
1811
1929
2031
2113
222
2313
2411
2523
2631
2737
2817
295
3013
3117
3223
3329
3441
3543
3619
372
387
3917
4023
4131
4237
4359
4461
4523
465
473
4811
4919
5029
5137
5243
5361
5467
5529
562
577
5813
5917
6043
6143
6247
6353
6471
6573
6631
673
685
6913
7023
7119
7247
7353
7453
7567
7679
7779
7837

[2,3,3,5,7,5,2,11,13,7,3,7,19,19,11,3,5,11,29,31,
 13,2,13,11,23,31,37,17,5,13,17,23,29,41,43,19,2,7,
 17,23,31,37,59,61,23,5,3,11,19,29,37,43,61,67,29,
 2,7,13,17,43,43,47,53,71,73,31,3,5,13,23,19,47,53,
 53,67,79,79,37]