n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 8 |
3 | 72 |
4 | 1824 |
5 | 220608 |
6 | 498243968 |
7 | 309072306743552 |
8 | 14369391925598802012151296 |
9 | 146629927766168786239127150948525247729660416 |
[1,2,8,72,1824,220608,498243968,309072306743552, 14369391925598802012151296, 146629927766168786239127150948525247729660416] |