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A280345 as a simple table

na(n)
03
17
212
325
448
597
6192
7385
8768
91537
103072
116145
1212288
1324577
1449152
1598305
16196608
17393217
18786432
191572865
203145728
216291457
2212582912
2325165825
2450331648
25100663297
26201326592
27402653185
28805306368
291610612737
303221225472
316442450945
3212884901888

[3,7,12,25,48,97,192,385,768,1537,3072,6145,12288,
 24577,49152,98305,196608,393217,786432,1572865,
 3145728,6291457,12582912,25165825,50331648,
 100663297,201326592,402653185,805306368,
 1610612737,3221225472,6442450945,12884901888]