n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 1 |
5 | 2 |
6 | 6 |
7 | 9 |
8 | 23 |
9 | 38 |
10 | 90 |
11 | 147 |
12 | 341 |
13 | 564 |
14 | 1294 |
15 | 2148 |
16 | 4896 |
17 | 8195 |
18 | 18612 |
19 | 31349 |
20 | 70983 |
21 | 120357 |
22 | 271921 |
23 | 463712 |
24 | 1045559 |
25 | 1792582 |
26 | 4034832 |
27 | 6950579 |
28 | 15619507 |
29 | 27023509 |
30 | 60638559 |
31 | 105320716 |
32 | 236006955 |
33 | 411364068 |
34 | 920626423 |
35 | 1609836928 |
[0,0,0,1,2,6,9,23,38,90,147,341,564,1294,2148, 4896,8195,18612,31349,70983,120357,271921,463712, 1045559,1792582,4034832,6950579,15619507,27023509, 60638559,105320716,236006955,411364068,920626423, 1609836928] |