n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 1 |
6 | 6 |
7 | 21 |
8 | 56 |
9 | 126 |
10 | 252 |
11 | 462 |
12 | 792 |
13 | 1287 |
14 | 2002 |
15 | 3003 |
16 | 4368 |
17 | 6188 |
18 | 8568 |
19 | 11628 |
20 | 15504 |
21 | 20349 |
22 | 26334 |
23 | 33649 |
24 | 42504 |
25 | 53130 |
26 | 65780 |
27 | 80730 |
28 | 98280 |
29 | 118755 |
30 | 142506 |
31 | 169911 |
32 | 201376 |
33 | 237336 |
34 | 278256 |
35 | 324632 |
36 | 376992 |
37 | 435897 |
38 | 501942 |
39 | 575757 |
40 | 658008 |
41 | 749398 |
[0,0,0,0,0,1,6,21,56,126,252,462,792,1287,2002, 3003,4368,6188,8568,11628,15504,20349,26334,33649, 42504,53130,65780,80730,98280,118755,142506, 169911,201376,237336,278256,324632,376992,435897, 501942,575757,658008,749398] |