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A286705 as a simple table

na(n)
01
13
24
315
40
563
60
7255
8480
91023
100
114095
120
1316383
140
1565535
163584
17262143
180
191048575
2016384
214194303
220
2316777215
240
2567108863
262097152
27268435455
2825165824
291073741823
304194304
314294967295
321074659328
3317179869183
340
3568719476735
368594128896

[1,3,4,15,0,63,0,255,480,1023,0,4095,0,16383,0,
 65535,3584,262143,0,1048575,16384,4194303,0,
 16777215,0,67108863,2097152,268435455,25165824,
 1073741823,4194304,4294967295,1074659328,
 17179869183,0,68719476735,8594128896]