n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 2 |
4 | 8 |
5 | 46 |
6 | 337 |
7 | 2976 |
8 | 30627 |
9 | 359222 |
10 | 4725968 |
11 | 68903766 |
12 | 1102712316 |
13 | 19219507328 |
14 | 362428546833 |
15 | 7352854216056 |
16 | 159705991698432 |
17 | 3697928742242694 |
18 | 90933523698184947 |
19 | 2366758931071064064 |
[1,1,1,2,8,46,337,2976,30627,359222,4725968, 68903766,1102712316,19219507328,362428546833, 7352854216056,159705991698432,3697928742242694, 90933523698184947,2366758931071064064] |