n | a(n) |
---|---|
0 | 0 |
1 | 5 |
2 | 10 |
3 | 30 |
4 | 120 |
5 | 600 |
6 | 3600 |
7 | 25200 |
8 | 201600 |
9 | 1814400 |
10 | 18144000 |
11 | 199584000 |
12 | 2395008000 |
13 | 31135104000 |
14 | 435891456000 |
15 | 6538371840000 |
16 | 104613949440000 |
17 | 1778437140480000 |
18 | 32011868528640000 |
19 | 608225502044160000 |
[0,5,10,30,120,600,3600,25200,201600,1814400, 18144000,199584000,2395008000,31135104000, 435891456000,6538371840000,104613949440000, 1778437140480000,32011868528640000, 608225502044160000] |