n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 6 |
4 | 36 |
5 | 2400 |
6 | 90000 |
7 | 55566000 |
8 | 13553164800 |
9 | 72267023646720 |
10 | 117595223746560000 |
11 | 5219033393851200000000 |
12 | 57636380373471744768000000 |
13 | 20810790197418148654769602560000 |
14 | 1578992018570629416640340512656998400 |
[1,1,6,36,2400,90000,55566000,13553164800, 72267023646720,117595223746560000, 5219033393851200000000,57636380373471744768000000, 20810790197418148654769602560000, 1578992018570629416640340512656998400] |