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A285273 as a simple table

na(n)
12
24
34
48
58
632
78
832
98
1032
118
12128
1316
1432
1564
16128
178
18256
194
20256
21128
22128
234
241024
2564
26128
2732
28512
2964
308192
3116
324096
3364
34128
35256
362048
3716
3816
3964
404096
4132
4216384
4332
442048
45512
46128
478
488192
4932
502048
51256
521024
5332
544096
55512
568192
5764
58512
598

[2,4,4,8,8,32,8,32,8,32,8,128,16,32,64,128,8,256,
 4,256,128,128,4,1024,64,128,32,512,64,8192,16,
 4096,64,128,256,2048,16,16,64,4096,32,16384,32,
 2048,512,128,8,8192,32,2048,256,1024,32,4096,512,
 8192,64,512,8]