n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 1 |
3 | 1 |
4 | 2 |
5 | 4 |
6 | 7 |
7 | 15 |
8 | 29 |
9 | 61 |
10 | 126 |
11 | 266 |
12 | 566 |
13 | 1212 |
14 | 2619 |
15 | 5685 |
16 | 12419 |
17 | 27247 |
18 | 60049 |
19 | 132847 |
20 | 294931 |
21 | 656877 |
22 | 1467258 |
23 | 3286218 |
24 | 7378240 |
25 | 16603458 |
26 | 37441990 |
27 | 84599854 |
28 | 191501532 |
29 | 434224404 |
30 | 986161959 |
31 | 2243009869 |
32 | 5108859821 |
[1,0,1,1,2,4,7,15,29,61,126,266,566,1212,2619, 5685,12419,27247,60049,132847,294931,656877, 1467258,3286218,7378240,16603458,37441990, 84599854,191501532,434224404,986161959,2243009869, 5108859821] |