n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | 0 |
4 | 4 |
5 | 12 |
6 | 56 |
7 | 2 |
8 | 1360 |
9 | 2672 |
10 | 320 |
11 | 16 |
12 | 350000 |
13 | 431232 |
14 | 107904 |
15 | 12864 |
16 | 3872 |
17 | 320 |
18 | 255036992 |
19 | 234667968 |
20 | 98251776 |
21 | 19523136 |
22 | 10633728 |
23 | 1615552 |
24 | 1182720 |
25 | 163520 |
26 | 127360 |
27 | 13440 |
[0,1,0,4,12,56,2,1360,2672,320,16,350000,431232, 107904,12864,3872,320,255036992,234667968, 98251776,19523136,10633728,1615552,1182720,163520, 127360,13440] |