n | a(n) |
---|---|
1 | 6 |
2 | 140 |
3 | 312 |
4 | 1560 |
5 | 14384 |
6 | 18018 |
7 | 40992 |
8 | 2337400 |
9 | 7012200 |
10 | 11027016 |
11 | 231402600 |
12 | 534775296 |
13 | 9866296440 |
14 | 11453072202 |
[6,140,312,1560,14384,18018,40992,2337400,7012200, 11027016,231402600,534775296,9866296440, 11453072202] |