n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 0 |
6 | 720 |
7 | 7560 |
8 | 70560 |
9 | 680400 |
10 | 7015680 |
11 | 78004080 |
12 | 935542080 |
13 | 12074119200 |
14 | 167122859904 |
15 | 2472036446880 |
16 | 38940240568320 |
17 | 651087633530880 |
18 | 11519998092877824 |
19 | 215088381671892480 |
20 | 4226801728115404800 |
21 | 87218325048627763200 |
22 | 1885639117481531596800 |
[0,0,0,0,0,0,720,7560,70560,680400,7015680, 78004080,935542080,12074119200,167122859904, 2472036446880,38940240568320,651087633530880, 11519998092877824,215088381671892480, 4226801728115404800,87218325048627763200, 1885639117481531596800] |