The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 49 |
| 4 | 5761 |
| 5 | 476161 |
| 6 | 457113601 |
| 7 | 3439085027329 |
| 8 | 18696142934507521 |
| 9 | 144017748317668638721 |
| 10 | 30063679011292374997401601 |
| 11 | 10371304522603231166854078660609 |
| 12 | 3639433320096084212920229480292679681 |
| 13 | 18767347744724322162378748108305552459694081 |
[1,1,49,5761,476161,457113601,3439085027329, 18696142934507521,144017748317668638721, 30063679011292374997401601, 10371304522603231166854078660609, 3639433320096084212920229480292679681, 18767347744724322162378748108305552459694081] |