n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 0 |
3 | 1 |
4 | 2 |
5 | 3 |
6 | 6 |
7 | 11 |
8 | 21 |
9 | 39 |
10 | 72 |
11 | 135 |
12 | 252 |
13 | 470 |
14 | 876 |
15 | 1635 |
16 | 3051 |
17 | 5691 |
18 | 10617 |
19 | 19808 |
20 | 36956 |
21 | 68946 |
22 | 128628 |
23 | 239976 |
24 | 447714 |
25 | 835278 |
26 | 1558337 |
27 | 2907320 |
28 | 5424056 |
29 | 10119411 |
30 | 18879319 |
31 | 35222285 |
32 | 65712612 |
33 | 122597016 |
34 | 228723648 |
35 | 426719269 |
36 | 796110663 |
37 | 1485267309 |
38 | 2770995395 |
[1,0,0,1,2,3,6,11,21,39,72,135,252,470,876,1635, 3051,5691,10617,19808,36956,68946,128628,239976, 447714,835278,1558337,2907320,5424056,10119411, 18879319,35222285,65712612,122597016,228723648, 426719269,796110663,1485267309,2770995395] |