n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 1568 |
3 | 0 |
4 | 410816 |
5 | 0 |
6 | 43381856 |
7 | 0 |
8 | 2485013888 |
9 | 0 |
10 | 90102925472 |
11 | 0 |
12 | 2275791199808 |
13 | 0 |
14 | 42760561395424 |
15 | 3758096384 |
16 | 627153507629824 |
17 | 544923975680 |
18 | 7450881715909408 |
19 | 27028229193728 |
20 | 73852826419374016 |
[1,0,1568,0,410816,0,43381856,0,2485013888,0, 90102925472,0,2275791199808,0,42760561395424, 3758096384,627153507629824,544923975680, 7450881715909408,27028229193728,73852826419374016] |