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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 9 |
| 6 | 10 |
| 7 | 61 |
| 8 | 62 |
| 9 | 497 |
| 10 | 1492 |
| 11 | 26857 |
| 12 | 26858 |
| 13 | 6445921 |
| 14 | 6445922 |
| 15 | 786402485 |
| 16 | 21232867096 |
| 17 | 10531502079617 |
| 18 | 10531502079618 |
| 19 | 314049392014208761 |
| 20 | 314049392014208762 |
| 21 | 33736441887734362049089 |
| 22 | 6173768865455388254983288 |
[1,2,3,4,9,10,61,62,497,1492,26857,26858,6445921, 6445922,786402485,21232867096,10531502079617, 10531502079618,314049392014208761, 314049392014208762,33736441887734362049089, 6173768865455388254983288] |