n | a(n) |
---|---|
0 | -1 |
1 | 1 |
2 | 0 |
3 | 3 |
4 | 16 |
5 | 165 |
6 | 2016 |
7 | 30415 |
8 | 539904 |
9 | 11049129 |
10 | 256038400 |
11 | 6627314331 |
12 | 189517916160 |
13 | 5933803272397 |
14 | 201893195083776 |
15 | 7417376809230375 |
16 | 292648536838045696 |
17 | 12341039738944113105 |
18 | 553942486234823786496 |
19 | 26369048375194607316019 |
20 | 1326864458454400696320000 |
[-1,1,0,3,16,165,2016,30415,539904,11049129, 256038400,6627314331,189517916160,5933803272397, 201893195083776,7417376809230375, 292648536838045696,12341039738944113105, 553942486234823786496,26369048375194607316019, 1326864458454400696320000] |