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A166173 as a simple table

na(n)
18
212
36
418
515
612
721
818
96
1018
1124
1221
1327
1424
1536
1624
1721
1827
1924
2012
2130
2221
2318
2424
2518
2633
2730
2830
2924
3033
3127
3224
3336
3442
3536
3615
3712
3821
3918
4024
4118
4221
4336
4433
4512
4621
4730
4824
4930
5042
5130
5227
5342
5448
5524
5648
5736
5848
5930
6039
6154
6224
6324
6436
6512

[8,12,6,18,15,12,21,18,6,18,24,21,27,24,36,24,21,
 27,24,12,30,21,18,24,18,33,30,30,24,33,27,24,36,
 42,36,15,12,21,18,24,18,21,36,33,12,21,30,24,30,
 42,30,27,42,48,24,48,36,48,30,39,54,24,24,36,12]