n | a(n) |
---|---|
0 | 1 |
1 | 9 |
2 | 216 |
3 | 9720 |
4 | 699840 |
5 | 73483200 |
6 | 10581580800 |
7 | 1999918771200 |
8 | 479980505088000 |
9 | 142554210011136000 |
10 | 51319515604008960000 |
11 | 22016072194119843840000 |
12 | 11096100385836401295360000 |
13 | 6491218725714294757785600000 |
14 | 4362098983680006077231923200000 |
[1,9,216,9720,699840,73483200,10581580800, 1999918771200,479980505088000,142554210011136000, 51319515604008960000,22016072194119843840000, 11096100385836401295360000, 6491218725714294757785600000, 4362098983680006077231923200000] |