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A135542 as a simple table

na(n)
11
23
32
47
54
65
73
815
98
109
115
1211
136
147
154
1631
1716
1817
199
2019
2110
2211
236
2423
2512
2613
277
2815
298
309
315
3263
3332
3433
3517
3635
3718
3819
3910
4039
4120
4221
4311
4423
4512
4613
477
4847
4924
5025
5113
5227
5314
5415
558
5631
5716
5817
599
6019
6110
6211
636
64127
6564
6665
6733
6867
6934
7035
7118
7271
7336
7437
7519
7639
7720
7821

[1,3,2,7,4,5,3,15,8,9,5,11,6,7,4,31,16,17,9,19,10,
 11,6,23,12,13,7,15,8,9,5,63,32,33,17,35,18,19,10,
 39,20,21,11,23,12,13,7,47,24,25,13,27,14,15,8,31,
 16,17,9,19,10,11,6,127,64,65,33,67,34,35,18,71,36,
 37,19,39,20,21]