n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 0 |
6 | 0 |
7 | 504 |
8 | 4032 |
9 | 27216 |
10 | 514080 |
11 | 4823280 |
12 | 57081024 |
13 | 500972472 |
14 | 4412103696 |
15 | 60619398840 |
16 | 686638592640 |
17 | 9335025764064 |
18 | 104304736815552 |
19 | 1180585704051936 |
20 | 29016515871665280 |
21 | 478096386437121480 |
[0,0,0,0,0,0,504,4032,27216,514080,4823280, 57081024,500972472,4412103696,60619398840, 686638592640,9335025764064,104304736815552, 1180585704051936,29016515871665280, 478096386437121480] |