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A284349 as a simple table

na(n)
01
10
23
35
410
529
658
795
8175
9503
101019
111525
123066
138189
1416382
1524575
1645055
17129023
18262143
19393215
20786431
212097151
224194303
236291455
2411534335
2533030143
2667108863
27100663295
28201326591
29536870911
301073741823
311610612735
322952790015
338455716863

[1,0,3,5,10,29,58,95,175,503,1019,1525,3066,8189,
 16382,24575,45055,129023,262143,393215,786431,
 2097151,4194303,6291455,11534335,33030143,
 67108863,100663295,201326591,536870911,1073741823,
 1610612735,2952790015,8455716863]