n | a(n) |
---|---|
0 | 1 |
1 | 12 |
2 | 75 |
3 | 330 |
4 | 1155 |
5 | 3432 |
6 | 9009 |
7 | 21450 |
8 | 47190 |
9 | 97240 |
10 | 189618 |
11 | 352716 |
12 | 629850 |
13 | 1085280 |
14 | 1812030 |
15 | 2941884 |
16 | 4657983 |
17 | 7210500 |
18 | 10935925 |
19 | 16280550 |
20 | 23828805 |
21 | 34337160 |
22 | 48774375 |
23 | 68368950 |
24 | 94664700 |
25 | 129585456 |
26 | 175509972 |
27 | 235358200 |
[1,12,75,330,1155,3432,9009,21450,47190,97240, 189618,352716,629850,1085280,1812030,2941884, 4657983,7210500,10935925,16280550,23828805, 34337160,48774375,68368950,94664700,129585456, 175509972,235358200] |