n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 54 |
4 | 4608 |
5 | 10800000 |
6 | 233280000 |
7 | 213462345600000 |
8 | 71945836874956800000 |
9 | 301100369020478344396800000 |
10 | 3345559655783092715520000000000 |
11 | 42953724653410633055099209541222400000000 |
[1,1,4,54,4608,10800000,233280000,213462345600000, 71945836874956800000,301100369020478344396800000, 3345559655783092715520000000000, 42953724653410633055099209541222400000000] |