n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 1 |
3 | 6 |
4 | 21 |
5 | 100 |
6 | 957 |
7 | 8498 |
8 | 70217 |
9 | 762696 |
10 | 9950809 |
11 | 128378910 |
12 | 1775380893 |
13 | 28325140012 |
14 | 483428842197 |
15 | 8558590549322 |
16 | 163465935697169 |
17 | 3367220579004048 |
18 | 72712394227734577 |
19 | 1648059951297530166 |
[1,0,1,6,21,100,957,8498,70217,762696,9950809, 128378910,1775380893,28325140012,483428842197, 8558590549322,163465935697169,3367220579004048, 72712394227734577,1648059951297530166] |