n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 1 |
3 | 0 |
4 | 11 |
5 | 10 |
6 | 0 |
7 | 645 |
8 | 924 |
9 | 280 |
10 | 0 |
11 | 111563 |
12 | 197802 |
13 | 101640 |
14 | 15400 |
15 | 0 |
16 | 42567981 |
17 | 86271640 |
18 | 57717660 |
19 | 15415400 |
20 | 1401400 |
21 | 0 |
22 | 30342678923 |
23 | 67630651098 |
24 | 53492240256 |
25 | 19158419280 |
26 | 3144741600 |
27 | 190590400 |
[1,0,1,0,11,10,0,645,924,280,0,111563,197802, 101640,15400,0,42567981,86271640,57717660, 15415400,1401400,0,30342678923,67630651098, 53492240256,19158419280,3144741600,190590400] |