n | a(n) |
---|---|
2 | 1 |
3 | 0 |
4 | 11 |
5 | 5 |
6 | 304 |
7 | 364 |
8 | 15980 |
9 | 34236 |
10 | 1368936 |
11 | 4429656 |
12 | 173699712 |
13 | 771653376 |
14 | 30605906304 |
15 | 175622947200 |
16 | 7149130156800 |
17 | 50800930272000 |
18 | 2137822335475200 |
19 | 18241636315507200 |
20 | 796397873127782400 |
21 | 7971407298921830400 |
22 | 361615771356450508800 |
23 | 4168685961862906982400 |
24 | 196587429737202833817600 |
[1,0,11,5,304,364,15980,34236,1368936,4429656, 173699712,771653376,30605906304,175622947200, 7149130156800,50800930272000,2137822335475200, 18241636315507200,796397873127782400, 7971407298921830400,361615771356450508800, 4168685961862906982400,196587429737202833817600] |