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A256420 as a simple table

na(n)
12
21
33
48
54
612
75
816
918
1020
116
1224
137
1428
1530
1632
179
1836
1910
2040
2142
2244
2311
2448
2550
2652
2754
2856
2913
3060
3114
3264
3366
3468
3570
3672
3715
3876
3978
4080
4117
4284
4319
4488
4590
4692
4721
4896
4998
50100
51102
52104
5322
54108
55110
56112
57114
58116
5923
60120

[2,1,3,8,4,12,5,16,18,20,6,24,7,28,30,32,9,36,10,
 40,42,44,11,48,50,52,54,56,13,60,14,64,66,68,70,
 72,15,76,78,80,17,84,19,88,90,92,21,96,98,100,102,
 104,22,108,110,112,114,116,23,120]