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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 3 |
| 3 | 9 |
| 4 | 125 |
| 5 | 1409 |
| 6 | 134649 |
| 7 | 9775233 |
| 8 | 7056026001 |
| 9 | 4365949239297 |
| 10 | 25236968856946209 |
| 11 | 97871747641444333569 |
| 12 | 6214784730407041487304385 |
| 13 | 252021162589018039813851873281 |
| 14 | 105775796091843258520649528395263873 |
| 15 | 37978893525907253948045960222247183810561 |
[1,1,3,9,125,1409,134649,9775233,7056026001, 4365949239297,25236968856946209, 97871747641444333569,6214784730407041487304385, 252021162589018039813851873281, 105775796091843258520649528395263873, 37978893525907253948045960222247183810561] |