n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 22 |
3 | 440 |
4 | 12760 |
5 | 484880 |
6 | 22789360 |
7 | 1276204160 |
8 | 82953270400 |
9 | 6138542009600 |
10 | 509498986796800 |
11 | 46873906785305600 |
12 | 4734264585315865600 |
13 | 520769104384745216000 |
14 | 61971523421784680704000 |
15 | 7932354997988439130112000 |
16 | 1086732634724416160825344000 |
17 | 158662964669764759480500224000 |
[1,2,22,440,12760,484880,22789360,1276204160, 82953270400,6138542009600,509498986796800, 46873906785305600,4734264585315865600, 520769104384745216000,61971523421784680704000, 7932354997988439130112000, 1086732634724416160825344000, 158662964669764759480500224000] |