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A060531 as a simple table

na(n)
01
19
282
3756
47048
566384
6631072
76048576
858388608
9567108864
105536870912
1154294967296
12534359738368
135274877906944
1452199023255552
15517592186044416
165140737488355328
1751125899906842624
18509007199254740992
195072057594037927936
2050576460752303423488

[1,9,82,756,7048,66384,631072,6048576,58388608,
 567108864,5536870912,54294967296,534359738368,
 5274877906944,52199023255552,517592186044416,
 5140737488355328,51125899906842624,
 509007199254740992,5072057594037927936,
 50576460752303423488]