n | a(n) |
---|---|
0 | 1 |
1 | 10 |
2 | 280 |
3 | 15120 |
4 | 1330560 |
5 | 172972800 |
6 | 31135104000 |
7 | 7410154752000 |
8 | 2252687044608000 |
9 | 851515702861824000 |
10 | 391697223316439040000 |
11 | 215433472824041472000000 |
12 | 139600890389978873856000000 |
[1,10,280,15120,1330560,172972800,31135104000, 7410154752000,2252687044608000,851515702861824000, 391697223316439040000,215433472824041472000000, 139600890389978873856000000] |