n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 15 |
4 | 144 |
5 | 1765 |
6 | 26400 |
7 | 466459 |
8 | 9508352 |
9 | 219651849 |
10 | 5671088640 |
11 | 161833149511 |
12 | 5058050224128 |
13 | 171837337744813 |
14 | 6304955850432512 |
15 | 248477268083174355 |
16 | 10467916801317273600 |
17 | 469451601966727952401 |
18 | 22329535184262444220416 |
19 | 1122809130124800181976575 |
[1,2,15,144,1765,26400,466459,9508352,219651849, 5671088640,161833149511,5058050224128, 171837337744813,6304955850432512, 248477268083174355,10467916801317273600, 469451601966727952401,22329535184262444220416, 1122809130124800181976575] |