The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 511 |
| 2 | 242461 |
| 3 | 105683341 |
| 4 | 43843180113 |
| 5 | 17792504911231 |
| 6 | 7146486319870849 |
| 7 | 2856738227918860537 |
| 8 | 1139431807812280823353 |
| 9 | 454016084146597129480639 |
| 10 | 180827014727915133583355805 |
| 11 | 72007238386097441302774324845 |
| 12 | 28672084199736350940864453233905 |
[511,242461,105683341,43843180113,17792504911231, 7146486319870849,2856738227918860537, 1139431807812280823353,454016084146597129480639, 180827014727915133583355805, 72007238386097441302774324845, 28672084199736350940864453233905] |