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A237520 as a simple table

na(n)
01
12
22
32
44
54
66
74
86
912
108
1112
1220
1312
1412
1520
1640
1724
1824
1940
2070
2140
2236
2340
2470
25140
2680
2772
2880
29140
30252
31140
32120
33120
34140
35252
36504
37280
38240
39240
40280
41504
42924
43504
44420
45400
46420
47504
48924
491848
501008
51840
52800
53840
541008
551848
563432
571848
581512
591400
601400
611512
621848

[1,2,2,2,4,4,6,4,6,12,8,12,20,12,12,20,40,24,24,
 40,70,40,36,40,70,140,80,72,80,140,252,140,120,
 120,140,252,504,280,240,240,280,504,924,504,420,
 400,420,504,924,1848,1008,840,800,840,1008,1848,
 3432,1848,1512,1400,1400,1512,1848]