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A024494 as a simple table

na(n)
11
22
33
45
510
621
743
886
9171
10341
11682
121365
132731
145462
1510923
1621845
1743690
1887381
19174763
20349526
21699051
221398101
232796202
245592405
2511184811
2622369622
2744739243
2889478485
29178956970
30357913941
31715827883
321431655766
332863311531
345726623061
3511453246122

[1,2,3,5,10,21,43,86,171,341,682,1365,2731,5462,
 10923,21845,43690,87381,174763,349526,699051,
 1398101,2796202,5592405,11184811,22369622,
 44739243,89478485,178956970,357913941,715827883,
 1431655766,2863311531,5726623061,11453246122]