n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 784 |
5 | 40496 |
6 | 451104 |
7 | 2803552 |
8 | 12139552 |
9 | 41792672 |
10 | 121269248 |
11 | 310362944 |
12 | 718151344 |
13 | 1534460624 |
14 | 3067048224 |
15 | 5801302304 |
16 | 10464095808 |
17 | 18125622336 |
18 | 30299632896 |
19 | 49104515712 |
20 | 77410664016 |
21 | 119081302128 |
22 | 179178580768 |
[0,0,0,784,40496,451104,2803552,12139552,41792672, 121269248,310362944,718151344,1534460624, 3067048224,5801302304,10464095808,18125622336, 30299632896,49104515712,77410664016,119081302128, 179178580768] |