n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 0 |
6 | 1 |
7 | 5 |
8 | 15 |
9 | 35 |
10 | 70 |
11 | 128 |
12 | 226 |
13 | 402 |
14 | 735 |
15 | 1375 |
16 | 2588 |
17 | 4830 |
18 | 8882 |
19 | 16108 |
20 | 28943 |
21 | 51785 |
22 | 92573 |
23 | 165525 |
24 | 295869 |
25 | 528069 |
26 | 940259 |
27 | 1669725 |
28 | 2957941 |
29 | 5229953 |
30 | 9233748 |
31 | 16284106 |
32 | 28688451 |
33 | 50490125 |
34 | 88765885 |
35 | 155891305 |
36 | 273495479 |
37 | 479360847 |
38 | 839451764 |
[0,0,0,0,0,0,1,5,15,35,70,128,226,402,735,1375, 2588,4830,8882,16108,28943,51785,92573,165525, 295869,528069,940259,1669725,2957941,5229953, 9233748,16284106,28688451,50490125,88765885, 155891305,273495479,479360847,839451764] |