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A288335 as a simple table

na(n)
01
13
26
37
424
563
656
7223
8480
9511
101536
114095
123584
1314335
1432640
158191
16130560
17131071
18423936
191048575
20516096
213801087
222064384
2315204351
2433423360
2516777215
26131596288
2767108863
28534773760
291015021567
30268009472
314225761279
32536739840
3317179344895

[1,3,6,7,24,63,56,223,480,511,1536,4095,3584,
 14335,32640,8191,130560,131071,423936,1048575,
 516096,3801087,2064384,15204351,33423360,16777215,
 131596288,67108863,534773760,1015021567,268009472,
 4225761279,536739840,17179344895]