n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 3 |
5 | 41 |
6 | 383 |
7 | 3073 |
8 | 22835 |
9 | 162517 |
10 | 1127399 |
11 | 7700835 |
12 | 52118506 |
13 | 350902046 |
14 | 2356532130 |
15 | 15813455692 |
16 | 106160717591 |
17 | 713555194577 |
18 | 4804401287757 |
19 | 32414156949765 |
20 | 219174260505645 |
21 | 1485378918978855 |
22 | 10089794073161037 |
[0,0,0,3,41,383,3073,22835,162517,1127399,7700835, 52118506,350902046,2356532130,15813455692, 106160717591,713555194577,4804401287757, 32414156949765,219174260505645,1485378918978855, 10089794073161037] |