n | a(n) |
---|---|
1 | 4 |
2 | 6 |
3 | 15 |
4 | 105 |
5 | 5460 |
6 | 14903070 |
7 | 111050740260915 |
8 | 6166133456248548335768188155 |
9 | 19010600900133834176644234577571914951562754277857057935 |
[4,6,15,105,5460,14903070,111050740260915, 6166133456248548335768188155, 19010600900133834176644234577571914951562754277857\ 057935] |