n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 20 |
4 | 56 |
5 | 576 |
6 | 1408 |
7 | 6656 |
8 | 5120 |
9 | 278528 |
10 | 622592 |
11 | 2752512 |
12 | 6029312 |
13 | 52428800 |
14 | 113246208 |
15 | 486539264 |
16 | 1040187392 |
17 | 11811160064 |
18 | 15032385536 |
19 | 317827579904 |
20 | 223338299392 |
21 | 5634997092352 |
22 | 11819749998592 |
23 | 3298534883328 |
[1,3,20,56,576,1408,6656,5120,278528,622592, 2752512,6029312,52428800,113246208,486539264, 1040187392,11811160064,15032385536,317827579904, 223338299392,5634997092352,11819749998592, 3298534883328] |