n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 72 |
4 | 1536 |
5 | 14400 |
6 | 92160 |
7 | 470400 |
8 | 2064384 |
9 | 8128512 |
10 | 29491200 |
11 | 100362240 |
12 | 324403200 |
13 | 1005109248 |
14 | 3005743104 |
15 | 8722022400 |
16 | 24662507520 |
17 | 68183654400 |
18 | 184817811456 |
19 | 492285984768 |
20 | 1291006771200 |
21 | 3338686955520 |
22 | 8526181171200 |
23 | 21526669688832 |
24 | 53788022931456 |
[0,0,72,1536,14400,92160,470400,2064384,8128512, 29491200,100362240,324403200,1005109248, 3005743104,8722022400,24662507520,68183654400, 184817811456,492285984768,1291006771200, 3338686955520,8526181171200,21526669688832, 53788022931456] |