n | a(n) |
---|---|
2 | 15 |
3 | 609 |
4 | 1920 |
5 | 392486 |
6 | 113377876875 |
7 | 155741745023280000 |
8 | 6605216052044829651068 |
9 | 62870654640959433925847207524 |
10 | 21721105002949781819252278922169473422080 |
[15,609,1920,392486,113377876875, 155741745023280000,6605216052044829651068, 62870654640959433925847207524, 21721105002949781819252278922169473422080] |