n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 0 |
6 | 1 |
7 | 0 |
8 | 1 |
9 | 1 |
10 | 3 |
11 | 3 |
12 | 11 |
13 | 18 |
14 | 58 |
15 | 139 |
16 | 451 |
17 | 1326 |
18 | 4461 |
19 | 14554 |
20 | 49957 |
21 | 171159 |
22 | 598102 |
23 | 2098675 |
24 | 7437910 |
25 | 26490072 |
26 | 94944685 |
27 | 341867921 |
28 | 1236864842 |
29 | 4493270976 |
30 | 16387852863 |
31 | 59985464681 |
32 | 220320405895 |
33 | 811796327750 |
34 | 3000183106119 |
[0,0,0,0,0,1,0,1,1,3,3,11,18,58,139,451,1326,4461, 14554,49957,171159,598102,2098675,7437910, 26490072,94944685,341867921,1236864842,4493270976, 16387852863,59985464681,220320405895,811796327750, 3000183106119] |