n | a(n) |
---|---|
1 | 1 |
2 | 0 |
3 | 0 |
4 | 1 |
5 | 2 |
6 | 0 |
7 | 0 |
8 | 10 |
9 | 36 |
10 | 0 |
11 | 0 |
12 | 720 |
13 | 5600 |
14 | 0 |
15 | 0 |
16 | 703760 |
17 | 11220000 |
18 | 0 |
19 | 0 |
20 | 9168331776 |
21 | 293293716992 |
22 | 0 |
23 | 0 |
24 | 1601371799340544 |
25 | 102484848265030656 |
26 | 0 |
27 | 0 |
28 | 3837878966366932639744 |
29 | 491247277315343649710080 |
30 | 0 |
31 | 0 |
[1,0,0,1,2,0,0,10,36,0,0,720,5600,0,0,703760, 11220000,0,0,9168331776,293293716992,0,0, 1601371799340544,102484848265030656,0,0, 3837878966366932639744,491247277315343649710080,0, 0] |