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A164090 as a simple table

na(n)
12
23
34
46
58
612
716
824
932
1048
1164
1296
13128
14192
15256
16384
17512
18768
191024
201536
212048
223072
234096
246144
258192
2612288
2716384
2824576
2932768
3049152
3165536
3298304
33131072
34196608
35262144
36393216
37524288
38786432
391048576
401572864
412097152
423145728

[2,3,4,6,8,12,16,24,32,48,64,96,128,192,256,384,
 512,768,1024,1536,2048,3072,4096,6144,8192,12288,
 16384,24576,32768,49152,65536,98304,131072,196608,
 262144,393216,524288,786432,1048576,1572864,
 2097152,3145728]