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A016018 as a simple table

na(n)
01
12
24
38
416
56
664
7128
8256
912
101024
112048
124096
1324
1416384
1532768
1636
1748
18262144
19524288
201048576
2130
224194304
2372
2416777216
25192
2667108864
27134217728
28268435456
29384
30144
312147483648
324294967296
33216
3417179869184
3534359738368
3668719476736

[1,2,4,8,16,6,64,128,256,12,1024,2048,4096,24,
 16384,32768,36,48,262144,524288,1048576,30,
 4194304,72,16777216,192,67108864,134217728,
 268435456,384,144,2147483648,4294967296,216,
 17179869184,34359738368,68719476736]