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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 5 |
| 3 | 88 |
| 4 | 3893 |
| 5 | 352536 |
| 6 | 57322537 |
| 7 | 15277686880 |
| 8 | 6239711818377 |
| 9 | 3708478187297920 |
| 10 | 3079046917046731661 |
| 11 | 3455392385954013825024 |
| 12 | 5100835934217411940938685 |
| 13 | 9682263835381845999967986688 |
| 14 | 23180826149963609282826172967025 |
| 15 | 68850271609123855250628849758027776 |
[1,1,5,88,3893,352536,57322537,15277686880, 6239711818377,3708478187297920, 3079046917046731661,3455392385954013825024, 5100835934217411940938685, 9682263835381845999967986688, 23180826149963609282826172967025, 68850271609123855250628849758027776] |