n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 10 |
4 | 45 |
5 | 252 |
6 | 1130 |
7 | 5270 |
8 | 23520 |
9 | 106960 |
10 | 483756 |
11 | 2211650 |
12 | 10149805 |
13 | 46911060 |
14 | 217868310 |
15 | 1017057518 |
16 | 4767797895 |
17 | 22438419120 |
18 | 105960938380 |
19 | 501928967930 |
20 | 2384171386941 |
21 | 11353241261180 |
22 | 54185968572450 |
23 | 259150507387910 |
24 | 1241763071712930 |
25 | 5960463867187752 |
26 | 28656077411358180 |
27 | 137973711706163210 |
[0,0,0,10,45,252,1130,5270,23520,106960,483756, 2211650,10149805,46911060,217868310,1017057518, 4767797895,22438419120,105960938380,501928967930, 2384171386941,11353241261180,54185968572450, 259150507387910,1241763071712930,5960463867187752, 28656077411358180,137973711706163210] |