n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 18 |
3 | 36 |
4 | 720 |
5 | 3600 |
6 | 42624 |
7 | 312480 |
8 | 3148032 |
9 | 27073152 |
10 | 261446688 |
11 | 2407791936 |
12 | 23168736768 |
13 | 220481838720 |
14 | 2137258661472 |
[1,0,18,36,720,3600,42624,312480,3148032,27073152, 261446688,2407791936,23168736768,220481838720, 2137258661472] |