n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 0 |
3 | 1 |
4 | 1 |
5 | 8 |
6 | 36 |
7 | 229 |
8 | 1625 |
9 | 13208 |
10 | 120288 |
11 | 1214673 |
12 | 13469897 |
13 | 162744944 |
14 | 2128047988 |
15 | 29943053061 |
16 | 451123462673 |
17 | 7245940789072 |
18 | 123604151490592 |
19 | 2231697509543361 |
20 | 42519034050101745 |
21 | 852495597142800376 |
[1,0,0,1,1,8,36,229,1625,13208,120288,1214673, 13469897,162744944,2128047988,29943053061, 451123462673,7245940789072,123604151490592, 2231697509543361,42519034050101745, 852495597142800376] |