n | a(n) |
---|---|
0 | 1 |
1 | 18 |
2 | 213 |
3 | 2114 |
4 | 19173 |
5 | 165354 |
6 | 1384741 |
7 | 11393778 |
8 | 92748645 |
9 | 750039290 |
10 | 6040740069 |
11 | 48528576642 |
12 | 389243479717 |
13 | 3119026937226 |
14 | 24977625311397 |
15 | 199948094540306 |
16 | 1600220345577189 |
17 | 12804941098049562 |
18 | 102455421613293925 |
[1,18,213,2114,19173,165354,1384741,11393778, 92748645,750039290,6040740069,48528576642, 389243479717,3119026937226,24977625311397, 199948094540306,1600220345577189, 12804941098049562,102455421613293925] |