n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | 2 |
4 | 36 |
5 | 1200 |
6 | 57000 |
7 | 3477600 |
8 | 257826240 |
9 | 22438563840 |
10 | 2238543216000 |
11 | 251584613280000 |
12 | 31431367287936000 |
13 | 4319334744012288000 |
14 | 647313578549730892800 |
15 | 105041172967733882880000 |
16 | 18345770194541665075200000 |
17 | 3430869798262479024291840000 |
[0,1,2,36,1200,57000,3477600,257826240, 22438563840,2238543216000,251584613280000, 31431367287936000,4319334744012288000, 647313578549730892800,105041172967733882880000, 18345770194541665075200000, 3430869798262479024291840000] |