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A205404 as a simple table

na(n)
12
24
34
46
56
612
79
89
920
1012
1112
1216
1325
1416
1516
1620
1736
1820
1920
2036
2125
2242
2325
2425
2556
2630
2736
2830
2930
3036
3156
3236
3342
3436
3536
3642
3749
3842
3964
4042
4142
4272
4349
4456
4549
46110
4749
4849
49100
5056
5181
5256
53110
5456
5556
5672
57121
5864
59169
6064
6181
6264
6364
64100
6581
6672

[2,4,4,6,6,12,9,9,20,12,12,16,25,16,16,20,36,20,
 20,36,25,42,25,25,56,30,36,30,30,36,56,36,42,36,
 36,42,49,42,64,42,42,72,49,56,49,110,49,49,100,56,
 81,56,110,56,56,72,121,64,169,64,81,64,64,100,81,
 72]