n | a(n) |
---|---|
1 | 1 |
2 | 55 |
3 | 3330 |
4 | 5833350 |
5 | 11199999998880 |
6 | 642096000000065520 |
7 | 84083999999999159160 |
8 | 853092240000000006366360 |
9 | 21033492480000000001383782400 |
10 | 181960466688000000000107035568640 |
[1,55,3330,5833350,11199999998880, 642096000000065520,84083999999999159160, 853092240000000006366360, 21033492480000000001383782400, 181960466688000000000107035568640] |