n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 6 |
3 | 72 |
4 | 1332 |
5 | 33264 |
6 | 1040256 |
7 | 38926656 |
8 | 1692061488 |
9 | 83688313536 |
10 | 4638320578944 |
11 | 284692939944192 |
12 | 19169186341398912 |
13 | 1404935464314299904 |
14 | 111348880778746460160 |
15 | 9489756817594314049536 |
16 | 865470841829802331976448 |
[1,1,6,72,1332,33264,1040256,38926656,1692061488, 83688313536,4638320578944,284692939944192, 19169186341398912,1404935464314299904, 111348880778746460160,9489756817594314049536, 865470841829802331976448] |