The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 8 |
| 4 | 17 |
| 5 | 24 |
| 6 | 113 |
| 7 | 657 |
| 8 | 1346 |
| 9 | 3667 |
| 10 | 17318 |
| 11 | 68642 |
| 12 | 355612 |
| 13 | 355612 |
| 14 | 1678243 |
| 15 | 1678243 |
| 16 | 16207565 |
[1,2,8,17,24,113,657,1346,3667,17318,68642,355612, 355612,1678243,1678243,16207565] |