n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 6 |
3 | 15 |
4 | 12 |
5 | 25 |
6 | 43 |
7 | 73 |
8 | 480 |
9 | 1981 |
10 | 3205 |
11 | 9038 |
12 | 16099 |
13 | 376340 |
14 | 211318 |
15 | 2461230 |
16 | 2253517 |
17 | 16907618 |
18 | 106308537 |
19 | 312911063 |
[1,2,6,15,12,25,43,73,480,1981,3205,9038,16099, 376340,211318,2461230,2253517,16907618,106308537, 312911063] |