n | a(n) |
---|---|
1 | 5 |
2 | 10 |
3 | 10 |
4 | 45 |
5 | 252 |
6 | 1120 |
7 | 5270 |
8 | 23475 |
9 | 106950 |
10 | 483504 |
11 | 2211650 |
12 | 10148630 |
13 | 46911060 |
14 | 217863040 |
15 | 1017057256 |
16 | 4767774375 |
17 | 22438419120 |
18 | 105960830300 |
19 | 501928967930 |
20 | 2384170903140 |
21 | 11353241255900 |
[5,10,10,45,252,1120,5270,23475,106950,483504, 2211650,10148630,46911060,217863040,1017057256, 4767774375,22438419120,105960830300,501928967930, 2384170903140,11353241255900] |