n | a(n) |
---|---|
0 | 1 |
1 | 18 |
2 | 1944 |
3 | 524880 |
4 | 264539520 |
5 | 214277011200 |
6 | 254561089305600 |
7 | 416971064282572800 |
8 | 900657498850357248000 |
9 | 2480410751833883860992000 |
10 | 8483004771271882804592640000 |
11 | 35272333838948488701496197120000 |
[1,18,1944,524880,264539520,214277011200, 254561089305600,416971064282572800, 900657498850357248000,2480410751833883860992000, 8483004771271882804592640000, 35272333838948488701496197120000] |