n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 240 |
3 | 20160 |
4 | 0 |
5 | 319334400 |
6 | 62270208000 |
7 | 0 |
8 | 4979623993344000 |
9 | 1946321606541312000 |
10 | 0 |
11 | 517040334777699532800000 |
12 | 155112100433309859840000000 |
13 | 0 |
14 | 229885811837232250818134016000000 |
15 | 230239482316981838896315760640000000 |
16 | 0 |
17 | 82665183731089159437333210700185600000000 |
[1,0,240,20160,0,319334400,62270208000,0, 4979623993344000,1946321606541312000,0, 517040334777699532800000, 155112100433309859840000000,0, 229885811837232250818134016000000, 230239482316981838896315760640000000,0, 82665183731089159437333210700185600000000] |