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A168641 as a simple table

na(n)
01
11
21
31
42
51
61
76
86
91
101
118
1218
138
141
151
1610
1730
1830
1910
201
211
2212
2345
2460
2545
2612
271
281
2914
3063
31105
32105
3363
3414
351
361
3716
3884
39168
40210
41168
4284
4316
441
451
4618
47108
48252
49378
50378
51252
52108
5318
541
551
5620
57135
58360
59630
60756
61630
62360
63135
6420
651

[1,1,1,1,2,1,1,6,6,1,1,8,18,8,1,1,10,30,30,10,1,1,
 12,45,60,45,12,1,1,14,63,105,105,63,14,1,1,16,84,
 168,210,168,84,16,1,1,18,108,252,378,378,252,108,
 18,1,1,20,135,360,630,756,630,360,135,20,1]