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A055259 as a simple table

na(n)
02
19
216
365
472
5128
6513
7520
8576
91024
104097
114104
124160
134608
148192
1532769
1632776
1732832
1833280
1936864
2065536
21262145
22262152
23262208
24262656
25266240
26294912
27524288
282097153
292097160
302097216
312097664
322101248
332129920
342359296
354194304
3616777217

[2,9,16,65,72,128,513,520,576,1024,4097,4104,4160,
 4608,8192,32769,32776,32832,33280,36864,65536,
 262145,262152,262208,262656,266240,294912,524288,
 2097153,2097160,2097216,2097664,2101248,2129920,
 2359296,4194304,16777217]