The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 9 |
| 2 | 97 |
| 3 | 1349 |
| 4 | 20288 |
| 5 | 329707 |
| 6 | 5574248 |
| 7 | 97506021 |
| 8 | 1747201171 |
| 9 | 31923371982 |
| 10 | 592403479154 |
[9,97,1349,20288,329707,5574248,97506021, 1747201171,31923371982,592403479154] |