| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 6 |
| 4 | 3 |
| 5 | 7 |
| 6 | 42 |
| 7 | 1512 |
| 8 | 2000376 |
| 9 | 3556892570112 |
| 10 | 11386336279786153952123289 |
| 11 | 117862412614885811248635740101130996768076206774085 |
[1,2,6,3,7,42,1512,2000376,3556892570112, 11386336279786153952123289, 11786241261488581124863574010113099676807620677408\ 5] |