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A277867 as a simple table

na(n)
01
12
24
311
416
547
664
7191
8256
9767
101024
113071
124096
1312287
1416384
1549151
1665536
17196607
18262144
19786431
201048576
213145727
224194304
2312582911
2416777216
2550331647
2667108864
27201326591
28268435456
29805306367
301073741824
313221225471
324294967296
3312884901887

[1,2,4,11,16,47,64,191,256,767,1024,3071,4096,
 12287,16384,49151,65536,196607,262144,786431,
 1048576,3145727,4194304,12582911,16777216,
 50331647,67108864,201326591,268435456,805306367,
 1073741824,3221225471,4294967296,12884901887]