n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 0 |
6 | 16 |
7 | 20 |
8 | 128 |
9 | 396 |
10 | 2288 |
11 | 11152 |
12 | 65712 |
13 | 437848 |
14 | 3118664 |
15 | 23387448 |
16 | 183463680 |
17 | 1474699536 |
18 | 12485203304 |
19 | 110956890352 |
20 | 1028589512656 |
21 | 9801351322432 |
22 | 97731300891440 |
[0,0,0,0,0,16,20,128,396,2288,11152,65712,437848, 3118664,23387448,183463680,1474699536,12485203304, 110956890352,1028589512656,9801351322432, 97731300891440] |