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A242731 as a simple table

na(n)
15
26
38
410
512
617
77
89
911
1013
1116
126
1310
149
1512
1615
1716
1814
1918
2022
2127
2220
2326
2432
2537
268
2714
2818
2918
3022
3122
3227
3327
3432
3520
3620
3726
3832
3932
4037
4137
4242
4342
4426
4534
4642
4747
4852
498
5011
5114
5210
5313
5411
5514
5614
5717
5816
5920
6020
6124
6212
638
6410
6514
6622
6730
6842

[5,6,8,10,12,17,7,9,11,13,16,6,10,9,12,15,16,14,
 18,22,27,20,26,32,37,8,14,18,18,22,22,27,27,32,20,
 20,26,32,32,37,37,42,42,26,34,42,47,52,8,11,14,10,
 13,11,14,14,17,16,20,20,24,12,8,10,14,22,30,42]