n | a(n) |
---|---|
1 | 0 |
2 | 7 |
3 | 84 |
4 | 756 |
5 | 6048 |
6 | 45360 |
7 | 326592 |
8 | 2286144 |
9 | 15676416 |
10 | 105815808 |
11 | 705438720 |
12 | 4655895552 |
13 | 30474952704 |
14 | 198087192576 |
15 | 1279948013568 |
16 | 8228237230080 |
17 | 52660718272512 |
18 | 335712078987264 |
19 | 2132759090036736 |
20 | 13507474236899328 |
[0,7,84,756,6048,45360,326592,2286144,15676416, 105815808,705438720,4655895552,30474952704, 198087192576,1279948013568,8228237230080, 52660718272512,335712078987264,2132759090036736, 13507474236899328] |