n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 19 |
4 | 136 |
5 | 1201 |
6 | 13024 |
7 | 165619 |
8 | 2425216 |
9 | 40132801 |
10 | 740882944 |
11 | 15091932019 |
12 | 336257744896 |
13 | 8134269015601 |
14 | 212309523595264 |
15 | 5946914908771219 |
16 | 177934946000306176 |
17 | 5663754614516217601 |
[1,1,4,19,136,1201,13024,165619,2425216,40132801, 740882944,15091932019,336257744896,8134269015601, 212309523595264,5946914908771219, 177934946000306176,5663754614516217601] |