n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 24 |
6 | 144 |
7 | 0 |
8 | 0 |
9 | 40320 |
10 | 403200 |
11 | 0 |
12 | 0 |
13 | 479001600 |
14 | 8643317760 |
15 | 29059430400 |
16 | 0 |
17 | 20922789888000 |
18 | 475108274995200 |
19 | 1871463083212800 |
20 | 0 |
21 | 2432902008176640000 |
22 | 76354225980899328000 |
23 | 525098781423304704000 |
24 | 0 |
25 | 620448401733239439360000 |
[1,1,0,0,0,24,144,0,0,40320,403200,0,0,479001600, 8643317760,29059430400,0,20922789888000, 475108274995200,1871463083212800,0, 2432902008176640000,76354225980899328000, 525098781423304704000,0,620448401733239439360000] |