n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 0 |
3 | 1 |
4 | 3 |
5 | 38 |
6 | 730 |
7 | 20670 |
8 | 781578 |
9 | 37885204 |
10 | 2289786624 |
11 | 168879532980 |
12 | 14930452838620 |
13 | 1558773675667164 |
14 | 189751596502711412 |
15 | 26640166205940265342 |
16 | 4272887377701537747810 |
17 | 776487144927243427031040 |
18 | 158705790134274513564693472 |
19 | 36246543562488282624570636306 |
[1,0,0,1,3,38,730,20670,781578,37885204, 2289786624,168879532980,14930452838620, 1558773675667164,189751596502711412, 26640166205940265342,4272887377701537747810, 776487144927243427031040, 158705790134274513564693472, 36246543562488282624570636306] |