n | a(n) |
---|---|
1 | 1 |
2 | 4 |
3 | 16 |
4 | 96 |
5 | 768 |
6 | 7680 |
7 | 92160 |
8 | 1290240 |
9 | 20643840 |
10 | 371589120 |
11 | 7431782400 |
12 | 163499212800 |
13 | 3923981107200 |
14 | 102023508787200 |
15 | 2856658246041600 |
16 | 85699747381248000 |
17 | 2742391916199936000 |
18 | 93241325150797824000 |
19 | 3356687705428721664000 |
20 | 127554132806291423232000 |
[1,4,16,96,768,7680,92160,1290240,20643840, 371589120,7431782400,163499212800,3923981107200, 102023508787200,2856658246041600, 85699747381248000,2742391916199936000, 93241325150797824000,3356687705428721664000, 127554132806291423232000] |