n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 1 |
5 | 0 |
6 | 5 |
7 | 14 |
8 | 66 |
9 | 307 |
10 | 1554 |
11 | 8415 |
12 | 48530 |
13 | 296582 |
14 | 1913561 |
15 | 12988776 |
16 | 92467629 |
17 | 688528288 |
18 | 5349409512 |
19 | 43270425827 |
20 | 363680219762 |
21 | 3170394634443 |
22 | 28619600156344 |
23 | 267129951788160 |
24 | 2574517930001445 |
25 | 25587989366964056 |
26 | 261961602231869825 |
[1,0,0,0,1,0,5,14,66,307,1554,8415,48530,296582, 1913561,12988776,92467629,688528288,5349409512, 43270425827,363680219762,3170394634443, 28619600156344,267129951788160,2574517930001445, 25587989366964056,261961602231869825] |