n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 0 |
6 | 2304 |
7 | 35280 |
8 | 811008 |
9 | 5080320 |
10 | 38784000 |
11 | 153679680 |
12 | 699678720 |
13 | 2120152320 |
14 | 7113012480 |
15 | 18036018000 |
16 | 49416536064 |
17 | 110279070720 |
18 | 261526745088 |
19 | 530024705280 |
20 | 1128038400000 |
[0,0,0,0,0,2304,35280,811008,5080320,38784000, 153679680,699678720,2120152320,7113012480, 18036018000,49416536064,110279070720,261526745088, 530024705280,1128038400000] |