n | a(n) |
---|---|
1 | 2 |
2 | 4 |
3 | 24 |
4 | 224 |
5 | 2880 |
6 | 47232 |
7 | 942592 |
8 | 22171648 |
9 | 600698880 |
10 | 18422374400 |
11 | 630897721344 |
12 | 23864653578240 |
13 | 988197253808128 |
14 | 44460603225407488 |
15 | 2159714024218951680 |
16 | 112652924603290615808 |
17 | 6280048587936003784704 |
18 | 372616014329572403183616 |
19 | 23445082059018189741752320 |
[2,4,24,224,2880,47232,942592,22171648,600698880, 18422374400,630897721344,23864653578240, 988197253808128,44460603225407488, 2159714024218951680,112652924603290615808, 6280048587936003784704,372616014329572403183616, 23445082059018189741752320] |