n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 1 |
4 | 3 |
5 | 4 |
6 | 10 |
7 | 15 |
8 | 30 |
9 | 51 |
10 | 97 |
11 | 177 |
12 | 334 |
13 | 621 |
14 | 1182 |
15 | 2243 |
16 | 4278 |
17 | 8203 |
18 | 15779 |
19 | 30446 |
20 | 58882 |
21 | 114125 |
22 | 221636 |
23 | 431155 |
24 | 840041 |
25 | 1638853 |
26 | 3201255 |
27 | 6259884 |
28 | 12253156 |
29 | 24006205 |
30 | 47072013 |
31 | 92370614 |
32 | 181390365 |
33 | 356434492 |
34 | 700827326 |
[0,0,0,1,3,4,10,15,30,51,97,177,334,621,1182,2243, 4278,8203,15779,30446,58882,114125,221636,431155, 840041,1638853,3201255,6259884,12253156,24006205, 47072013,92370614,181390365,356434492,700827326] |