n | a(n) |
---|---|
0 | 2 |
1 | 1 |
2 | 2 |
3 | 12 |
4 | 24 |
5 | 120 |
6 | 1440 |
7 | 5040 |
8 | 40320 |
9 | 725760 |
10 | 3628800 |
11 | 39916800 |
12 | 958003200 |
13 | 6227020800 |
14 | 87178291200 |
15 | 2615348736000 |
16 | 20922789888000 |
17 | 355687428096000 |
18 | 12804747411456000 |
19 | 121645100408832000 |
20 | 2432902008176640000 |
[2,1,2,12,24,120,1440,5040,40320,725760,3628800, 39916800,958003200,6227020800,87178291200, 2615348736000,20922789888000,355687428096000, 12804747411456000,121645100408832000, 2432902008176640000] |