n | a(n) |
---|---|
3 | 0 |
4 | 0 |
5 | 0 |
6 | 0 |
7 | 1 |
8 | 3 |
9 | 11 |
10 | 33 |
11 | 95 |
12 | 260 |
13 | 696 |
14 | 1816 |
15 | 4659 |
16 | 11795 |
17 | 29520 |
18 | 73267 |
19 | 180485 |
20 | 442157 |
21 | 1077856 |
22 | 2617726 |
23 | 6336551 |
24 | 15299287 |
25 | 36857178 |
26 | 88635225 |
27 | 212829307 |
28 | 510416549 |
29 | 1222826994 |
30 | 2927083468 |
31 | 7001510693 |
32 | 16737477645 |
[0,0,0,0,1,3,11,33,95,260,696,1816,4659,11795, 29520,73267,180485,442157,1077856,2617726,6336551, 15299287,36857178,88635225,212829307,510416549, 1222826994,2927083468,7001510693,16737477645] |