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| n | a(n) |
|---|---|
| 1 | 64 |
| 2 | 31984 |
| 3 | 9509536 |
| 4 | 2397172032 |
| 5 | 622483753816 |
| 6 | 165216756703876 |
| 7 | 43681585962838352 |
| 8 | 11516921180669227688 |
| 9 | 3038058234902923710566 |
| 10 | 801695505848282515899812 |
| 11 | 211540283503697058778299926 |
[64,31984,9509536,2397172032,622483753816, 165216756703876,43681585962838352, 11516921180669227688,3038058234902923710566, 801695505848282515899812, 211540283503697058778299926] |