n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 2 |
6 | 5 |
7 | 11 |
8 | 25 |
9 | 66 |
10 | 131 |
11 | 349 |
12 | 708 |
13 | 1911 |
14 | 3856 |
15 | 10604 |
16 | 21597 |
17 | 59961 |
18 | 123266 |
19 | 345060 |
20 | 715198 |
21 | 2015416 |
22 | 4206926 |
23 | 11919257 |
24 | 25032840 |
25 | 71246129 |
26 | 150413234 |
27 | 429750208 |
28 | 911379241 |
29 | 2612614298 |
30 | 5562367173 |
31 | 15991792731 |
32 | 34164355260 |
[0,0,0,0,2,5,11,25,66,131,349,708,1911,3856,10604, 21597,59961,123266,345060,715198,2015416,4206926, 11919257,25032840,71246129,150413234,429750208, 911379241,2612614298,5562367173,15991792731, 34164355260] |