n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 1 |
6 | 4 |
7 | 13 |
8 | 36 |
9 | 93 |
10 | 225 |
11 | 528 |
12 | 1198 |
13 | 2666 |
14 | 5815 |
15 | 12517 |
16 | 26587 |
17 | 55933 |
18 | 116564 |
19 | 241151 |
20 | 495417 |
21 | 1011950 |
22 | 2055892 |
23 | 4157514 |
24 | 8371318 |
25 | 16792066 |
26 | 33564256 |
27 | 66875221 |
28 | 132849983 |
29 | 263192599 |
30 | 520087551 |
31 | 1025295487 |
32 | 2016745784 |
33 | 3958608430 |
34 | 7754810743 |
[0,0,0,0,1,4,13,36,93,225,528,1198,2666,5815, 12517,26587,55933,116564,241151,495417,1011950, 2055892,4157514,8371318,16792066,33564256, 66875221,132849983,263192599,520087551,1025295487, 2016745784,3958608430,7754810743] |