n | a(n) |
---|---|
1 | 0 |
2 | 6 |
3 | 900 |
4 | 748440 |
5 | 1559930400 |
6 | 6928346502000 |
7 | 58160619655538400 |
8 | 845986566719614320000 |
9 | 19957466912796971445888000 |
10 | 724891264860942581350908960000 |
11 | 38873628093261330554954970801600000 |
[0,6,900,748440,1559930400,6928346502000, 58160619655538400,845986566719614320000, 19957466912796971445888000, 724891264860942581350908960000, 38873628093261330554954970801600000] |