n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 0 |
3 | 0 |
4 | 96 |
5 | 480 |
6 | 57600 |
7 | 403200 |
8 | 191600640 |
9 | 1724405760 |
10 | 1597368729600 |
11 | 17571056025600 |
12 | 28378507272192000 |
13 | 368920594538496000 |
14 | 952903592436341145600 |
15 | 14293553886545117184000 |
16 | 55442575636536644075520000 |
17 | 942523785821122949283840000 |
18 | 5231730206388249282710863872000 |
[1,1,0,0,96,480,57600,403200,191600640,1724405760, 1597368729600,17571056025600,28378507272192000, 368920594538496000,952903592436341145600, 14293553886545117184000, 55442575636536644075520000, 942523785821122949283840000, 5231730206388249282710863872000] |