n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 0 |
3 | 4 |
4 | 36 |
5 | 576 |
6 | 17600 |
7 | 694800 |
8 | 35802144 |
9 | 2391438336 |
10 | 200018045952 |
11 | 20476348214400 |
12 | 2521840589347200 |
13 | 368057828019898368 |
14 | 62841061478699292672 |
15 | 12413136137144581203456 |
16 | 2809529229255558769612800 |
17 | 722458985698006017844838400 |
18 | 209487621780682072569567903744 |
[1,0,0,4,36,576,17600,694800,35802144,2391438336, 200018045952,20476348214400,2521840589347200, 368057828019898368,62841061478699292672, 12413136137144581203456,2809529229255558769612800, 722458985698006017844838400, 209487621780682072569567903744] |