n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 0 |
3 | 1 |
4 | 0 |
5 | 5 |
6 | 10 |
7 | 61 |
8 | 280 |
9 | 1665 |
10 | 10470 |
11 | 73621 |
12 | 561660 |
13 | 4650425 |
14 | 41441530 |
15 | 395757181 |
16 | 4031082640 |
17 | 43626778785 |
18 | 499925138190 |
19 | 6046986040741 |
20 | 76992601769220 |
21 | 1029315335116745 |
22 | 14416214547400450 |
23 | 211085887742964301 |
24 | 3225154787165157400 |
25 | 51329932704636904305 |
[1,0,0,1,0,5,10,61,280,1665,10470,73621,561660, 4650425,41441530,395757181,4031082640,43626778785, 499925138190,6046986040741,76992601769220, 1029315335116745,14416214547400450, 211085887742964301,3225154787165157400, 51329932704636904305] |