n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 0 |
6 | 0 |
7 | 0 |
8 | 0 |
9 | 1 |
10 | 5 |
11 | 18 |
12 | 55 |
13 | 143 |
14 | 333 |
15 | 715 |
16 | 1430 |
17 | 2701 |
18 | 4862 |
19 | 8398 |
20 | 13996 |
21 | 22610 |
22 | 35530 |
23 | 54479 |
24 | 81719 |
25 | 120175 |
26 | 173586 |
27 | 246675 |
28 | 345345 |
29 | 476905 |
30 | 650325 |
31 | 876525 |
32 | 1168700 |
33 | 1542684 |
34 | 2017356 |
35 | 2615091 |
36 | 3362260 |
37 | 4289780 |
38 | 5433721 |
39 | 6835972 |
40 | 8544965 |
41 | 10616471 |
[0,0,0,0,0,0,0,0,0,1,5,18,55,143,333,715,1430, 2701,4862,8398,13996,22610,35530,54479,81719, 120175,173586,246675,345345,476905,650325,876525, 1168700,1542684,2017356,2615091,3362260,4289780, 5433721,6835972,8544965,10616471] |