n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 9 |
3 | 216 |
4 | 9936 |
5 | 745200 |
6 | 82717200 |
7 | 12738448800 |
8 | 2598643555200 |
9 | 678245967907200 |
10 | 220429939569840000 |
11 | 87290256069656640000 |
12 | 41375581377017247360000 |
13 | 23128949989752641274240000 |
[1,1,9,216,9936,745200,82717200,12738448800, 2598643555200,678245967907200,220429939569840000, 87290256069656640000,41375581377017247360000, 23128949989752641274240000] |