n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 1 |
6 | 1 |
7 | 7 |
8 | 8 |
9 | 36 |
10 | 45 |
11 | 165 |
12 | 220 |
13 | 715 |
14 | 1001 |
15 | 3003 |
16 | 4368 |
17 | 12376 |
18 | 18564 |
19 | 50388 |
20 | 77520 |
21 | 203490 |
22 | 319770 |
23 | 817190 |
24 | 1307504 |
25 | 3268760 |
26 | 5311735 |
27 | 13037895 |
28 | 21474180 |
29 | 51895935 |
30 | 86493225 |
31 | 206253075 |
[0,0,0,0,0,1,1,7,8,36,45,165,220,715,1001,3003, 4368,12376,18564,50388,77520,203490,319770,817190, 1307504,3268760,5311735,13037895,21474180, 51895935,86493225,206253075] |