n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 2 |
4 | 11 |
5 | 94 |
6 | 365 |
7 | 2891 |
8 | 30242 |
9 | 207653 |
10 | 2119577 |
11 | 19807006 |
12 | 218836016 |
13 | 3149604508 |
14 | 57791376424 |
15 | 900430886016 |
16 | 25428213982688 |
[1,2,2,11,94,365,2891,30242,207653,2119577, 19807006,218836016,3149604508,57791376424, 900430886016,25428213982688] |