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A046521 as a simple table

na(n)
01
12
21
36
46
51
620
730
810
91
1070
11140
1270
1314
141
15252
16630
17420
18126
1918
201
21924
222772
232310
24924
25198
2622
271
283432
2912012
3012012
316006
321716
33286
3426
351
3612870
3751480
3860060
3936036
4012870
412860
42390
4330
441
4548620
46218790
47291720
48204204
4987516
5024310

[1,2,1,6,6,1,20,30,10,1,70,140,70,14,1,252,630,
 420,126,18,1,924,2772,2310,924,198,22,1,3432,
 12012,12012,6006,1716,286,26,1,12870,51480,60060,
 36036,12870,2860,390,30,1,48620,218790,291720,
 204204,87516,24310]