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A164181 as a simple table

na(n)
01
12
24
38
416
530
657
7108
8209
9403
10777
111490
122863
135508
1410620
1520473
1639472
1776108
18146873
19283637
20548101
211059573
222049320
233965725
247678931
2514877381
2628839531
2755934330
28108544038
29210753678
30409436442
31795857215
321547813186
333011866617

[1,2,4,8,16,30,57,108,209,403,777,1490,2863,5508,
 10620,20473,39472,76108,146873,283637,548101,
 1059573,2049320,3965725,7678931,14877381,28839531,
 55934330,108544038,210753678,409436442,795857215,
 1547813186,3011866617]