n | a(n) |
---|---|
1 | 1 |
2 | 12 |
3 | 240 |
4 | 6720 |
5 | 241920 |
6 | 10644480 |
7 | 553512960 |
8 | 33210777600 |
9 | 2258332876800 |
10 | 171633298636800 |
11 | 14417197085491200 |
12 | 1326382131865190400 |
13 | 132638213186519040000 |
14 | 14324927024144056320000 |
15 | 1661691534800710533120000 |
16 | 206049750315288106106880000 |
[1,12,240,6720,241920,10644480,553512960, 33210777600,2258332876800,171633298636800, 14417197085491200,1326382131865190400, 132638213186519040000,14324927024144056320000, 1661691534800710533120000, 206049750315288106106880000] |