n | a(n) |
---|---|
0 | 1 |
1 | 20 |
2 | 784 |
3 | 52352 |
4 | 5360256 |
5 | 782525952 |
6 | 154594381824 |
7 | 39746508226560 |
8 | 12902483299368960 |
9 | 5162443736924160000 |
10 | 2496471943395999744000 |
11 | 1435556519572510605312000 |
12 | 968234590214616380866560000 |
[1,20,784,52352,5360256,782525952,154594381824, 39746508226560,12902483299368960, 5162443736924160000,2496471943395999744000, 1435556519572510605312000, 968234590214616380866560000] |