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| n | a(n) |
|---|---|
| 2 | 41 |
| 3 | 265 |
| 4 | 1697 |
| 5 | 10897 |
| 6 | 69941 |
| 7 | 448945 |
| 8 | 2881697 |
| 9 | 18497137 |
| 10 | 118730021 |
| 11 | 762108145 |
| 12 | 4891844657 |
| 13 | 31399932337 |
| 14 | 201550911701 |
| 15 | 1293721577905 |
| 16 | 8304182337857 |
| 17 | 53303156937457 |
| 18 | 342144045482501 |
| 19 | 2196165379031665 |
| 20 | 14096818096762577 |
| 21 | 90485116626705457 |
| 22 | 580808823292457141 |
[41,265,1697,10897,69941,448945,2881697,18497137, 118730021,762108145,4891844657,31399932337, 201550911701,1293721577905,8304182337857, 53303156937457,342144045482501,2196165379031665, 14096818096762577,90485116626705457, 580808823292457141] |