n | a(n) |
---|---|
1 | 1 |
2 | 6 |
3 | 180 |
4 | 37800 |
5 | 87318000 |
6 | 2622159540000 |
7 | 1338638666765400000 |
8 | 12984380089637682726000000 |
9 | 2896722619368127899492763620000000 |
10 | 18740906719713843949122453226304292600000000 |
[1,6,180,37800,87318000,2622159540000, 1338638666765400000,12984380089637682726000000, 2896722619368127899492763620000000, 18740906719713843949122453226304292600000000] |