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A151737 as a simple table

na(n)
01
12
21
35
41
55
65
711
81
95
105
1111
127
1315
1419
1523
161
175
185
1911
207
2115
2219
2323
247
2515
2621
2729
2829
2949
3059
3147
321
335
345
3511
367
3715
3819
3923
407
4115
4221
4329
4429
4549
4659
4747
487
4915
5021
5129
5229
5349
5461
5553
5629
5751
5871
5987
60107
61157
62163
6395
641
655
665
6711
687
6915
7019
7123
727
7315
7421
7529
7629
7749
7859
7947

[1,2,1,5,1,5,5,11,1,5,5,11,7,15,19,23,1,5,5,11,7,
 15,19,23,7,15,21,29,29,49,59,47,1,5,5,11,7,15,19,
 23,7,15,21,29,29,49,59,47,7,15,21,29,29,49,61,53,
 29,51,71,87,107,157,163,95,1,5,5,11,7,15,19,23,7,
 15,21,29,29,49,59,47]