n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 15 |
3 | 133 |
4 | 2025 |
5 | 37851 |
6 | 1030367 |
7 | 36362925 |
8 | 1606008513 |
9 | 87656896891 |
10 | 5778121715415 |
11 | 452794797220965 |
12 | 41609568918940625 |
[1,3,15,133,2025,37851,1030367,36362925, 1606008513,87656896891,5778121715415, 452794797220965,41609568918940625] |