n | a(n) |
---|---|
1 | 1 |
2 | 0 |
3 | 0 |
4 | 2 |
5 | 2 |
6 | 4 |
7 | 8 |
8 | 4 |
9 | 16 |
10 | 12 |
11 | 48 |
12 | 80 |
13 | 136 |
14 | 420 |
15 | 1240 |
16 | 3000 |
17 | 8152 |
18 | 18104 |
19 | 44184 |
20 | 144620 |
21 | 375664 |
22 | 1250692 |
23 | 3581240 |
24 | 11675080 |
25 | 34132592 |
26 | 115718268 |
27 | 320403024 |
28 | 1250901440 |
29 | 3600075088 |
30 | 14589438024 |
31 | 43266334696 |
32 | 181254386312 |
[1,0,0,2,2,4,8,4,16,12,48,80,136,420,1240,3000, 8152,18104,44184,144620,375664,1250692,3581240, 11675080,34132592,115718268,320403024,1250901440, 3600075088,14589438024,43266334696,181254386312] |