n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 3 |
4 | 12 |
5 | 48 |
6 | 1392 |
7 | 214402800 |
8 | 3817990510765200 |
9 | 4738197524832401740110000 |
10 | 1091118722532825192362856035208963090000 |
11 | 2182237445065650384725712070417926180000 |
12 | 507772214574105904772762129719909048054921244582661534399180000 |
[1,1,1,3,12,48,1392,214402800,3817990510765200, 4738197524832401740110000, 1091118722532825192362856035208963090000, 2182237445065650384725712070417926180000, 50777221457410590477276212971990904805492124458266\ 1534399180000] |