n | a(n) |
---|---|
1 | 2 |
2 | 6 |
3 | 24 |
4 | 120 |
5 | 720 |
6 | 24 |
7 | 40320 |
8 | 120 |
9 | 5040 |
10 | 720 |
11 | 479001600 |
12 | 120 |
13 | 87178291200 |
14 | 40320 |
15 | 720 |
16 | 5040 |
17 | 6402373705728000 |
18 | 5040 |
19 | 2432902008176640000 |
20 | 720 |
21 | 40320 |
22 | 479001600 |
23 | 620448401733239439360000 |
24 | 120 |
25 | 39916800 |
26 | 87178291200 |
27 | 3628800 |
28 | 40320 |
[2,6,24,120,720,24,40320,120,5040,720,479001600, 120,87178291200,40320,720,5040,6402373705728000, 5040,2432902008176640000,720,40320,479001600, 620448401733239439360000,120,39916800,87178291200, 3628800,40320] |