n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 38 |
4 | 693 |
5 | 21294 |
6 | 1011792 |
7 | 69920766 |
8 | 6710698740 |
9 | 862907887944 |
10 | 144436271624388 |
11 | 30735209866458888 |
12 | 8152133649148990080 |
13 | 2650418681465362135392 |
14 | 1041182371767985227729504 |
[1,1,4,38,693,21294,1011792,69920766,6710698740, 862907887944,144436271624388,30735209866458888, 8152133649148990080,2650418681465362135392, 1041182371767985227729504] |