n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 1 |
3 | 0 |
4 | 1 |
5 | 3 |
6 | 6 |
7 | 11 |
8 | 23 |
9 | 60 |
10 | 179 |
11 | 553 |
12 | 1716 |
13 | 5415 |
14 | 17801 |
15 | 61956 |
16 | 228391 |
17 | 882309 |
18 | 3530322 |
19 | 14531621 |
20 | 61454091 |
21 | 267479778 |
22 | 1200680113 |
23 | 5561767211 |
24 | 26553471186 |
25 | 130366882251 |
26 | 656668581417 |
27 | 3387887246292 |
28 | 17886582294921 |
29 | 96603394562849 |
30 | 533645344137390 |
31 | 3014295344076655 |
[0,1,1,0,1,3,6,11,23,60,179,553,1716,5415,17801, 61956,228391,882309,3530322,14531621,61454091, 267479778,1200680113,5561767211,26553471186, 130366882251,656668581417,3387887246292, 17886582294921,96603394562849,533645344137390, 3014295344076655] |