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| n | a(n) |
|---|---|
| 0 | 1073741824 |
| 1 | 3570467226624 |
| 2 | 296196766695424 |
| 3 | 6278211847988224 |
| 4 | 64925062108545024 |
| 5 | 430804206899405824 |
| 6 | 2113922820157210624 |
| 7 | 8335775831236199424 |
| 8 | 27850097600940212224 |
| 9 | 81707280688754689024 |
[1073741824,3570467226624,296196766695424, 6278211847988224,64925062108545024, 430804206899405824,2113922820157210624, 8335775831236199424,27850097600940212224, 81707280688754689024] |