n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 3 |
4 | 19 |
5 | 93 |
6 | 407 |
7 | 1674 |
8 | 6618 |
9 | 25455 |
10 | 95953 |
11 | 356151 |
12 | 1305887 |
13 | 4741092 |
14 | 17072484 |
15 | 61055787 |
16 | 217074895 |
17 | 767882865 |
18 | 2704365719 |
19 | 9487509102 |
20 | 33170122494 |
21 | 115614094071 |
22 | 401864286637 |
23 | 1393378817259 |
24 | 4820368210175 |
[0,0,0,3,19,93,407,1674,6618,25455,95953,356151, 1305887,4741092,17072484,61055787,217074895, 767882865,2704365719,9487509102,33170122494, 115614094071,401864286637,1393378817259, 4820368210175] |