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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 29 |
| 3 | 57 |
| 4 | 217 |
| 5 | 1099 |
| 6 | 4615 |
| 7 | 1630311 |
| 8 | 3827247 |
| 9 | 108899227 |
| 10 | 305185735 |
| 11 | 3189176095 |
| 12 | 50514325279 |
[1,29,57,217,1099,4615,1630311,3827247,108899227, 305185735,3189176095,50514325279] |