n | a(n) |
---|---|
1 | 1 |
2 | 12 |
3 | 15120 |
4 | 389188800 |
5 | 64117105007155200 |
6 | 10347762119105166852096000 |
7 | 1389578338099539041754702978576000000 |
8 | 4713072346356421489071058466945878500353772748800000000 |
[1,12,15120,389188800,64117105007155200, 10347762119105166852096000, 1389578338099539041754702978576000000, 47130723463564214890710584669458785003537727488000\ 00000] |