n | a(n) |
---|---|
5 | 1 |
6 | 36 |
7 | 882 |
8 | 18816 |
9 | 381024 |
10 | 7620480 |
11 | 153679680 |
12 | 3161410560 |
13 | 66784798080 |
14 | 1454424491520 |
15 | 32724551059200 |
16 | 761589551923200 |
17 | 18341615042150400 |
18 | 457129482588979200 |
19 | 11787410229615820800 |
20 | 314330939456421888000 |
21 | 8663746518767628288000 |
22 | 246661959710796005376000 |
[1,36,882,18816,381024,7620480,153679680, 3161410560,66784798080,1454424491520, 32724551059200,761589551923200,18341615042150400, 457129482588979200,11787410229615820800, 314330939456421888000,8663746518767628288000, 246661959710796005376000] |