n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 0 |
3 | 1 |
4 | 3 |
5 | 16 |
6 | 96 |
7 | 675 |
8 | 5413 |
9 | 48800 |
10 | 488592 |
11 | 5379333 |
12 | 64595975 |
13 | 840192288 |
14 | 11767626752 |
15 | 176574062535 |
16 | 2825965531593 |
17 | 48052401132800 |
18 | 865108807357216 |
19 | 16439727718351881 |
20 | 328839946389605643 |
21 | 6906458590966507696 |
[1,0,0,1,3,16,96,675,5413,48800,488592,5379333, 64595975,840192288,11767626752,176574062535, 2825965531593,48052401132800,865108807357216, 16439727718351881,328839946389605643, 6906458590966507696] |