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A090989 as a simple table

na(n)
14
26
38
412
516
624
732
848
964
1096
11128
12192
13256
14384
15512
16768
171024
181536
192048
203072
214096
226144
238192
2412288
2516384
2624576
2732768
2849152
2965536
3098304
31131072
32196608
33262144
34393216
35524288
36786432
371048576
381572864
392097152
403145728
414194304
426291456
438388608

[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,
 2097152,3145728,4194304,6291456,8388608]