n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 968 |
3 | 0 |
4 | 156816 |
5 | 0 |
6 | 10286936 |
7 | 0 |
8 | 368804128 |
9 | 0 |
10 | 8453107432 |
11 | 2097152 |
12 | 136631618992 |
13 | 530579456 |
14 | 1668180181624 |
15 | 26528972800 |
16 | 16189344891456 |
17 | 620777963520 |
18 | 129752349166088 |
19 | 9001280471040 |
20 | 883945662928592 |
[1,0,968,0,156816,0,10286936,0,368804128,0, 8453107432,2097152,136631618992,530579456, 1668180181624,26528972800,16189344891456, 620777963520,129752349166088,9001280471040, 883945662928592] |