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A166454 as a simple table

na(n)
21
31
41
52
63
72
82
95
105
112
123
137
1410
157
163
173
1810
1917
2017
2110
223
234
2414
2528
2635
2728
2814
294
304
3118
3242
3363
3463
3542
3618
374
385
3922
4060
41105
42126
43105
4460
4522
465
475
4827
4982
50165
51231
52231
53165
5482
5527
565
576
5833
59110
60247
61396
62462
63396
64247
65110
6633
676

[1,1,1,2,3,2,2,5,5,2,3,7,10,7,3,3,10,17,17,10,3,4,
 14,28,35,28,14,4,4,18,42,63,63,42,18,4,5,22,60,
 105,126,105,60,22,5,5,27,82,165,231,231,165,82,27,
 5,6,33,110,247,396,462,396,247,110,33,6]