n | a(n) |
---|---|
2 | 6 |
3 | 8 |
4 | 15 |
5 | 144 |
6 | 280 |
7 | 640 |
8 | 14175 |
9 | 2240 |
10 | 199584 |
11 | 87091200 |
12 | 875875 |
13 | 22353408000 |
14 | 5003856000 |
15 | 229605376 |
16 | 10854718875 |
17 | 941525544960000 |
18 | 1013940928000 |
19 | 3064383995904000 |
20 | 82324272054024 |
21 | 2996771880960000 |
22 | 255484332230400000 |
23 | 809280523999877529600000 |
24 | 5699209469078125 |
[6,8,15,144,280,640,14175,2240,199584,87091200, 875875,22353408000,5003856000,229605376, 10854718875,941525544960000,1013940928000, 3064383995904000,82324272054024,2996771880960000, 255484332230400000,809280523999877529600000, 5699209469078125] |