n | a(n) |
---|---|
1 | 2 |
2 | 8 |
3 | 24 |
4 | 216 |
5 | 4320 |
6 | 19008 |
7 | 103488 |
8 | 1292544 |
9 | 1548288 |
10 | 3264307200 |
11 | 24710676480 |
12 | 54623600640 |
13 | 16562257920 |
14 | 3345695539200 |
15 | 8216950210560 |
16 | 33673108783104000 |
17 | 205682009702400000 |
18 | 15655109317676236800 |
19 | 12302792042521559040000 |
[2,8,24,216,4320,19008,103488,1292544,1548288, 3264307200,24710676480,54623600640,16562257920, 3345695539200,8216950210560,33673108783104000, 205682009702400000,15655109317676236800, 12302792042521559040000] |