n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 14 |
3 | 100 |
4 | 1140 |
5 | 14880 |
6 | 249280 |
7 | 4801280 |
8 | 108574400 |
9 | 2767072000 |
10 | 79286592000 |
11 | 2508856627200 |
12 | 87115395136000 |
13 | 3287694620672000 |
14 | 134073047499776000 |
15 | 5872147278807040000 |
16 | 274939690654024704000 |
17 | 13701683362561818624000 |
18 | 724128149433185136640000 |
[1,2,14,100,1140,14880,249280,4801280,108574400, 2767072000,79286592000,2508856627200, 87115395136000,3287694620672000, 134073047499776000,5872147278807040000, 274939690654024704000,13701683362561818624000, 724128149433185136640000] |