n | a(n) |
---|---|
1 | 6 |
2 | 15 |
3 | 44 |
4 | 141 |
5 | 480 |
6 | 1703 |
7 | 6216 |
8 | 23136 |
9 | 87334 |
10 | 333309 |
11 | 1283706 |
12 | 4982458 |
13 | 19466130 |
14 | 76479612 |
15 | 301923554 |
16 | 1196919714 |
17 | 4762524162 |
18 | 19012433694 |
[6,15,44,141,480,1703,6216,23136,87334,333309, 1283706,4982458,19466130,76479612,301923554, 1196919714,4762524162,19012433694] |