The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 29 |
| 3 | 293 |
| 4 | 2649 |
| 5 | 23760 |
| 6 | 215594 |
| 7 | 1983334 |
| 8 | 18451711 |
| 9 | 173211045 |
| 10 | 1637570777 |
| 11 | 15570353488 |
[2,29,293,2649,23760,215594,1983334,18451711, 173211045,1637570777,15570353488] |